Library of Congress >> MARC >> Holdings >> 863-865

863-865 - Enumeration and Chronology-General Information


MARC 21 Holdings
October 2006

"Full" documentation refers to the MARC 21 Format for Holdings Data that contains detailed descriptions of every data element, along with examples, input conventions and history sections.

"Concise" documentation refers to the MARC 21 Concise Format for Holdings Data that contains abridged descriptions of every data element, along with examples.

863 - Enumeration and Chronology - Basic Bibliographic Unit (R) Full | Concise
864 - Enumeration and Chronology - Supplementary Material (R) Full | Concise
865 - Enumeration and Chronology - Indexes (R) Full | Concise

First Indicator
Field encoding level
# - No information provided
3 - Holdings level 3 [863/864]
4 - Holdings level 4
5 - Holdings level 4 with piece designation

Second Indicator
Form of holdings
# - No information provided
0 - Compressed [863/864]
1 - Uncompressed
2 - Compressed, use textual display [863/864]
3 - Uncompressed, use textual display
4 - Item(s) not published [863/864]


Subfield Codes
Enumeration:
$a - First level of enumeration (NR)
$b - Second level of enumeration (NR)
$c - Third level of enumeration (NR)
$d - Fourth level of enumeration (NR)
$e - Fifth level of enumeration (NR)
$f - Sixth level of enumeration (NR)
$g - Alternative numbering scheme, first level of enumeration (NR)
$h - Alternative numbering scheme, second level of enumeration (NR)

Chronology:
$i - First level of chronology (NR)
$j - Second level of chronology (NR)
$k - Third level of chronology (NR)
$l - Fourth level of chronology (NR)
$m - Alternative numbering scheme, chronology (NR)
$v - Issuing date (R) [865]
Descriptors:
$n - Converted Gregorian year (NR)
$o - Title of unit (R)
$p - Piece designation (NR)
$q - Piece physical condition (NR)

Numbers and codes:
$s - Copyright article-fee code (R)
$t - Copy number (NR)
$w - Break indicator (NR)

Notes:
$x - Nonpublic note (R)
$z - Public note (R)

Control subfields:
$6 - Linkage (NR)
$8 - Field link and sequence number (NR)

FIELD DEFINITION AND SCOPE

Description of the holdings of a bibliographic item in the collections of the reporting organization. The captions that identify the enumeration and chronology levels and the codes that define the publication pattern of the holdings are contained in the Captions and Pattern fields (853-855) that are linked to the 863-865 fields by a number in subfield $8 (Field link and sequence number).

A general description of the four types of holdings data fields and their relationship to each other is given in the Holdings Data--General Information section. The specific data elements that are required for the compression or expansion of enumeration and chronology data by computer algorithm is given in the the Input Conventions area of the Captions and Pattern Fields--General Information section. A description of compressibility and expandability is given in the Holdings Data--General Information section.

Guidelines for applying content designators and the input conventions for the 863-865 fields are given in this section.


GUIDELINES FOR APPLYING CONTENT DESIGNATORS

INDICATORS

First Indicator - Field encoding level
Level of specificity of the enumeration and chronology in the field as reflected in ANSI Z39.44 or ANSI/NISO Z39.7.
Values 3 and 4 reflect requirements of Levels 3 and 4 of Serial Holdings Statements (ANSI Z39.44) and Holdings Statements for Bibliographic Items (ANSI/NISO Z39.71). Values 3, 4, and 5 correspond to the level of specificity defined for the enumeration and chronology data at the record level by codes 3, 4, and 5 in Leader/17 (Encoding level).
# - No information provided
Level information is not provided.
853 20$81$av.$i(year)$wa
863 #0$81.1$a5-12$i1884-1892$zv.9, Jan. 1889 damaged.
3 - Holdings level 3 [863/864]
Summary enumeration and chronology information (that is, only at the first level of enumeration and chronology) for a basic bibliographic unit (field 863) or supplementary material (field 864).Value 3 is not applicable to a single-part item (Leader/06, code x).
853 20$81$av.$bno.$u6$vr$i(year)$j(month)$wm$x01,07
863 30$81.1$a113-123$i1923-1928
4 - Holdings level 4
Detailed enumeration and chronology information (that is, the first and all subsequent levels of enumeration and chronology).
853 22$81$av.$bno.$u4$vr$i(year)$j(season)$wq$x22
863 41$81.1$a3$b1$i1944$j22
5 - Holdings level 4 with piece designation
Detailed enumeration and chronology information and an identifying number for the physical piece in subfield $p (Piece designation).
853 20$81$av.$bno.$u52$vr$i(year)$j(month)$k(day)$ww$x1215
863 51$81.1$a1$b5$i1976$j01$k16$p1100026004
Second Indicator - Form of holdings
Whether the enumeration and chronology is expressed in a compressed or uncompressed (itemized) form and whether the 863-865 field or an 866-868 Textual Holdings field should be used for display purposes.
Compressed means that the stated field is expressed in a summarized form containing the enumeration and chronology of more than one part expressed as a range of holdings and comprising multiple holdings items. Uncompressed means that each holdings item is itemized, and thus recorded separately.
Value in the second indicator position does not indicate whether an 863 or 864 field contains the information required to allow the data to be compressed from an itemized report or expanded to an itemized report by computer algorithm. That information is indicated by the value in the first indicator position (Compressibility and Expandability) of the related 853 or 854 Captions and Pattern field to which an 863 or 864 field is linked by the linking number in subfield $8 (Field link and sequence number).
# - No information provided
Form of the enumeration and chronology in the field is not specified.
0 - Compressed [863/864]
Enumeration and chronology in a basic bibliographic unit (field 863) or supplementary material field (864) is expressed in a compressed form and a display of the data may be generated from the field.
853 20$81$av.$bno.$u4$vr$i(year)$j(season)$wq$x21
863 30$81.1$a1-10$i1943-1952$zbound
1 - Uncompressed
Enumeration and chronology in the field is expressed in an itemized form and a display of the data may be generated from the field.
853 20$81$av.$bpt.$u3$vc$i(year)$j(month)$wt$x01
863 41$81.1$a3$b2$i1974$j05
2 - Compressed, use textual display [863/864]
Enumeration and chronology in a basic bibliographic unit (field 863) or supplementary material field (864) is expressed in a compressed form but a display of the data may not be generated from the field.Display should be generated from the 866/867 Textual Holdings field that is linked to the 863 or 864 field by the linking number in subfield $8 (Field link and sequence number).
853 00$81$ano.$i(year)$j(month)$wb
863 41$81.1$a54$i2003$j08/09$wg
863 42$81.2$a56$i2003/2004$wg
863 41$81.3$a58$i2004$j04/05
866 41$81.2$ano.56(2003:Dec./2004:Jan.)
Display example: 
no.54(2003:Aug./Sept.),no.56(2003:Dec./2004:Jan.),no.58(2004:Apr./May)
3 - Uncompressed, use textual display
Enumeration and chronology in the field is expressed in an itemized form but a display of the data may not be generated from the field.Display should be generated from the 866-868 Textual Holdings field that is linked to the 863-865 field by the linking number in subfield $8 (Field link and sequence number).
853 20$81$a(year)$wa
863 #3$81.1$a1974
863 #3$81.2$a1976
863 #3$81.3$a1978
863 #3$81.4$a1979
863 #3$81.5$a1981
866 31$80$a1974-1981$zSome issues lost
4 - Item(s) not published [863/864]
Enumeration and chronology in a basic bibliographic unit (field 863) or supplementary material field (864) represents nonpublished parts of the bibliographic item.Parts described in the field are unpublished.
853 00$81$a(year)
863 40$81.1$a1900-1915
863 44$81.2$a1916
863 40$81.3$a1917-1940
[A break in the publication pattern is indicated in the second indicator value in the second Enumeration and Chronology field.]
Unpublished parts may also be indicated by code n (Nongap break) in subfield $w (Gap or nongap break indicator). The use of both value 4 and subfield $w in the same Enumeration and Chronology field is restricted to instances of consecutive unpublished parts and parts not in the holdings of the reporting organization.
853 20$81$av.$i(year)$wa
863 40$81.1$a1-3$i1958-1960$wg
863 40$81.2$a5-7$i1962-1965$wg
863 44$81.3$a9-10$i1967-1968$wg
863 40$81.4$a13-14$i1971-1972
[The reporting organization lacks volumes 4, 8, and 11-12. The second and third Enumeration and Chronology fields reflect both a nongap (v. 9-10) and a gap break (v. 11-12).]
Display example: 
v.1-3(1958-1960), v.5-7(1962-1965),;, v.13-14(1971-1972)

SUBFIELD CODES

$a-$h: Enumeration: Levels of enumeration that either appear on an item or that are used by the reporting organization to record the receipt of an item. These enumeration subfields are correlated with the enumeration caption subfields $a-$h in the 853-855 Captions and Pattern field linked to the 863-865 field, although the same subfields need not always be present. Full correlation of the enumeration level and the caption subfields $a-$h in linked 853-855/863-865 fields is not required when captions are not desired for displaying the holdings statement. Full correlation is required when compression or expansion of the field 863 or 864 enumeration by computer algorithm is desired. If there is no enumeration on the item for some level, enumeration may be invented and enclosed in brackets ([ ]).
When alternative numbering schemes are applicable to an item, subfields $g and $h contain the alternative enumeration. If more than two levels of alternative enumeration are required, an 866-868 Textual Holdings field is used.
When only chronology is used on an item (that is, the item carries no enumeration), the chronology is contained in the relevant enumeration subfield ($a-$h) instead of the chronology subfields ($i-$m).
853 03$81$a(year)
863 30$81.1$a1964-1981
[An annual publication identified only by year.]
$a - First level of enumeration
Highest level of enumeration. The designation for an unnumbered (for example, new ser.) or a numbered (for example, ser. 5) series is considered caption data and is contained in subfield $a (First level of enumeration) of the related 853-855 Captions and Pattern field.
855 ##$81$a(year)$wa
865 4#$81.1$a1918$osubject index
865 4#$81.2$a1919$osubject index
865 4#$81.3$a1920$osubject index
865 4#$81.4$a1921$osubject index
[Holdings consist of indexes for the years 1918-1921.]
853 01$81$av.
853 01$82$anew ser.:v.
863 40$81.1$a1-25
863 40$82.1$a1-12
[Holdings consist of v. 1-25 and new series v. 1-12.]
853 01$81$aser.5:v.$i(year)
863 40$81.1$a24-33$i1969-1978
[Holdings consist of series 5, v. 24-33, 1969-1978.]
When the enumeration consists of the number of units held followed by a term describing the units, the whole phrase is contained in the related 863-865 subfield.
853 03$81$a(unit)
863 #1$81.1$a1 score
853 03$81$a(unit)
863 31$81.1$aca. 1000 items
$b - Second level of enumeration
853 03$81$av.$bno.
863 41$81.1$a3$b1
$c - Third level of enumeration
853 20$81$aed.$bno.$u3$vr$csect.$u4$vr$dpt.$u2$vr$zbcLatn$i(year)$j(month)$k(day)$w18$ypd01,10,20
863 41$81.1$a609$b2$c1$i2004$j07$k20
$d - Fourth level of enumeration
853 20$81$aed.$bno.$u3$vr$csect.$u4$vr$dpt.$u2$vr$zbcLatn$i(year)$j(month)$k(day)$ws$ypd01,15
863 41$81.1$a2$b1$c1$dA$i2000$j01$k1
$e - Fifth level of enumeration
Subfield $e is unlikely to be used.
$f - Sixth level of enumeration
Subfield $f is unlikely to be used.
$g - Alternative numbering scheme, first level of enumeration
Highest level of an alternative numbering scheme.
853 03$81$av.$bno.$gno.$i(year)$j(month)
863 40$81.1$a1-3$g1-36$i1977-1979
863 40$81.2$a4$b1-2$g37-38$i1980$j01-02
[Holdings consist of v.1, no. 1-12 (no. 1-12) 1977; v.2, no. 1-12 (no. 13-24) 1978; v. 3, no. 1-12 (no. 25-36) 1979; and v. 4 no. 1-2 (no. 37-38) Jan.-Feb., 1980.]
$h - Alternative numbering scheme, second level of enumeration
853 02$81$av.$bno.$g(letter)$hBd.$u12$vr$i(year)$j(month)$wm$x01
863 40$81.1$a7$b1-3$gB$h21-23$i1981$j01
[Holdings consist of v.7, no.1-3 (B, Bd.21-23) Jan. 1981.]
$i-$m: Chronology: Hierarchical levels of chronology that either appear on an item or that are used by the reporting organization to record the receipt of an item. These chronology subfields are correlated with subfields $i-$m in the 853-855 Captions and Pattern field linked to the 863-865 field, although the same subfields need not always be present. Full correlation of the chronology level and the caption subfields $i-$m in linked 853-855/863-865 fields is not required when captions are not desired for displaying the holdings statement. Full correlation is required when compression or expansion of the field 863 or 864 chronology by computer algorithm is desired. If an applicable chronology level is lacking on the item, chronology may be invented and enclosed in brackets ([ ]).
Months and seasons may be expressed either in natural language or by the following codes:
Month Season
01-12 - Month 21 - Spring
22 - Summer
23 - Autumn
24 - Winter
Month codes of less than two digits is right justified and the unused position contains a zero.
When an alternative chronology scheme is applicable to an item, subfield $m contains the alternative chronology. If more than one level of alternative chronology is required, an 866-868 Textual Holdings field is used.
When only chronology is used on an item (that is, the item carries no enumeration), the chronology is contained in the relevant enumeration subfield ($a-$h) instead of the chronology subfields ($i-$m).
$i - First level of chronology
Highest level of chronology.
853 22$81$av.$bno.$u17$vr$i(year)$j(month)$k(day)$ww$x01,05,09
863 30$81.1$a58-60$i1898
$j - Second level of chronology
853 03$81$av.$bno.$i(year)$j(season)
863 30$81.1$a1-10$i1943-1952
863 41$81.2$a11$b1$i1953$j21
[Holdings consist of v.1-10 (complete) 1943-1952 and v.11, no.1, Spring 1953.]
$k - Third level of chronology
853 20$81$av.$bno$u52$vr$i(year)$j(month)$k(day)$ww$x1215
863 41$81.1$a1$b1$i1975$j12$k19
863 41$81.2$a1$b5$i1976$j01$k16
[Holdings consist of v.1, no.1, Dec. 19, 1975 and v.1, no.5, Jan. 16, 1976.]
$l - Fourth level of chronology
853 00$81$av.$bsect.$u12$vr$cno.$u7$vr$dpt.$uvar$vr$i(year)$j(month)$k(day)$lweek$wd$x01
863 40$81.1$a1$b4$c4-7$d15$i1988$j04$k13-16$l15
$m - Alternative numbering scheme, chronology
$n - Converted Gregorian year
Gregorian-calendar conversion of a year that is recorded in a non-Gregorian scheme in a chronology-level subfield ($i-$m).
$o - Title of unit
Title of unit (e.g., annual buyer’s guide, subject index) in the enumeration hierarchy when it has no associated sequence numbering. When used, subfield $o immediately follows the enumeration subfield to which it refers. When the title of unit applies to the bibliographic entity as a whole, rather than to a portion of its enumeration, field 844 (Name of unit) is used.
855 ##$81$a(year)$oalphabetical index
865 4#$81.1$a1969/1978$oTen year cumulative index
$p - Piece designation
Identification of a piece. The designation may be an identification number such as a bar code number or an accession number.
The piece designation may be preceded by an uppercase B or U to specify whether the piece is bound or unbound. When no piece designation exists, a double slash (//) may be recorded in subfield $p to signify that the holdings relate to a piece.
853 01$81$av.$wa
863 41$81.1$a1$p//
[The holdings consist of a physical piece (v. 1) that has no piece identification number.]
When the piece designation applies to the entire holdings statement, it is recorded in subfield $p (Piece designation) of field 852 (Location). When the piece designation applies to the enumeration and chronology recorded in field 863-865 it is recorded there. When the piece designation applies only at the item level, it is recorded in subfield $p of the item information field 876-878.
$q - Piece physical condition
Description of an unusual characteristic of the physical condition of the piece, for example, water spots, ink bleeding.
853 01$81$av.
863 41$81.1$a6$p7312986$qwater damage
[Volume 6 (accession no. 7312986) is water damaged.]
When the piece physical condition applies to the entire holdings statement, it is recorded in subfield $q (Piece physical condition) of field 852 (Location). Physical condition information for making preservation decisions is contained in field 583 (Action Note).
$s - Copyright article-fee code
Description of the copyright article-fee code is given in field 018 (Copyright Article-Fee Code) of the MARC 21 Format for Bibliographic Data .
$t - Copy number
Single copy number or a range of numbers for copies that have the same location and call number.
Caption for the copy number is contained in subfield $t (Copy) of the 853-855 Captions and Pattern field that is linked to the 863-865 field.
853 20$81$v.$bno.$u26$vr$i(year)$j(month)$k(day)$ww$x01,07$tc.
863 40$81.1$a113$b1-23$i1989$j01-05$t2$wn
863 40$81.2$a113$b24$i1989$j06$k12$t2
[Holdings consist of v.113, no.1-24, Jan. 2,1989-Jun. 12,1989, which comprises copy 2 of the bibliographic item.]
When the copy number applies to the entire holdings statement, it is recorded in subfield $t (Copy number) of field 852 (Location).
$v - Issuing date [865]
Date of issuance of an index.
855 ##$av.$i(year)$j(month)
865 ##$a40$i1989$j01-12$vJune 1990
$w - Break indicator
One-character code that indicates the reason for a break in the enumeration and chronology.
Break in the enumeration and chronology contained in multiple 863-865 fields is due either to published issue(s) lacking in the collection or to unpublished parts or a lack of continuity in the enumeration and chronology of the parts. Subfield $w is contained in the Enumeration and Chronology field that represents the holdings that immediately precedes the break. The use of subfield $w requires a new field 863-865 in which the enumeration and chronology following the break is recorded.
g - Gap break
Part(s) are lacking in the holdings of the reporting organization. Also used when there is doubt as to the cause of the break or when the cause is not known.
853 03$81$aBd.$i(year)
863 40$81.1$a1-19$i1911-1920/1921$wg
863 41$81.2$a22$i1924/1925
[A gap occurs in the holdings between v.19 and v.22.]
n - Nongap break
Break is due to unpublished part(s) or a lack of continuity in the enumeration and chronology of the parts.
853 20$81$a(year)
863 40$81.1$a1900-1915$wn
863 40$81.2$a1917-1940
[The holdings record contains no Enumeration and Chronology field for the nonpublished pieces. The nongap break is indicated by the code in subfield $w in the 863 field immediately preceding the break.]
853 20$81$av.$i(year)
863 40$81.1$a1-3$i1958-1960$wg
863 40$81.2$a5-7$i1962-1965$wn
863 44$81.3$a9-10$i1967-1968$wg
863 40$81.4$a13-14$i1971-1972
[The reporting organization lacks volumes 4, 8, and 11-12. The second and third Enumeration and Chronology fields reflect both a nongap (v. 9-10) and a gap break (v. 11-12).]
$x - Nonpublic note
Note relating to all or part of the field. The note is not written in a form that is adequate for public display. A note for public display is contained in subfield $z (Public note).
854 00$83$aSupplément de concours$i(year)$j(month)$wx
864 30$83.1$a1-3$i1983-1985$xbind in 1 v. when next issue arrives
$z - Public note
Note relating to all or part of the field. The note is written in a form that is adequate for public display. It contains information that cannot be contained in other subfields. For example, it may be used to specifically record missing issues or numbering irregularities. A note not for public display is contained in subfield $x (Nonpublic note).
853 33$81$av.$i(year)
863 30$81.1$a1-71$i1936-1971
863 30$81.2$a72$i1972$zApr.28 missing
$6 - Linkage
See description of this subfield in Appendix A: Control Subfields.
$8 - Field link and sequence number
See description of this subfield in Appendix A: Control Subfields.

INPUT CONVENTIONS

Form of holdings-Field 865 - Enumeration and chronology for indexes may not be expressed in a compressed form due to the ambiguity of the results. For example, vols. 1/5, 1936-1940 and vols. 6/10, 1941/1945 is not the same as vols. 1/10, 1936/1945. If a compressed-form display is desired for a range of indexes, the enumeration and chronology for each index is recorded in a separate field 865 (Second indicator, code 3) and the formatted display statement is recorded in field 868 (Textual Holdings-Indexes). The following values are not defined for the second indicator position (Form of holdings) of field 865 (Enumeration and Chronology-Indexes):
0 - Compressed
2 - Compressed, use textual display
4 - Item(s) not published
Unpublished parts-Fields 863 and 864, Subfield $w - Enumeration and Chronology field for a basic bibliographic unit (field 863) and supplementary material (864) may be used to record the enumeration and chronology for unpublished parts. In field 863 or 864, value 4 (Item(s) not published) in the second indicator position (Form of holdings) indicates that the enumeration and chronology in the field represents unpublished parts. Subfield $w (Break indicator) may be attached to an 863 or 864 field that has value 4 in the second indicator position only in instances of consecutively input fields that contain information about unpublished parts and parts not in the holdings of the reporting organization.
853 20$81$av.$i(year)
863 40$81.1$a5-7$i1962-1965
863 44$81.2$a8-9$i1966-1967$wg
863 40$81.3$a12-14$i1970-1972
[The second Enumeration and Chronology field reflects both a nongap break (v. 8-9), indicated by second indicator, value 4 (Item not published) and a gap break (reporting library does not hold v. 10-11), indicated by subfield $w, code g.]
Open-ended statements - When recording holdings (Leader/17, code 3 or 4), an open-ended statement, that is, one ending with a hyphen to show continuing receipt, may be used.
853 00$81$avyp.$bno.$i(year)$j(month)
863 30$81.1$a1-$i1973-
However, detailed holdings statements (Leader/17, code 4 or 5) must contain the enumeration and chronology for the last item reported because the most recently received item must be known in order to determine possible gaps in future receipts.
853 00$81$avyp.$bno.$i(year)$j(month)
863 40$81.1$a1-6$i1973-1978
863 41$81.2$a7$b1$i1979$j01$wg
863 40$81.3$a7$b3-9$i1979$j03-12
Cumulations - Cumulations are treated the same as other materials in the holdings statement. For example, a monthly publication has eleven regular issues and a twelfth issue that takes the place of the eleven separately issued numbers. The combined volume replaces the individual numbers in the enumeration and chronology subfields. If the individual issues are retained as well, they are treated as a different copy. Separate holdings records are created: one for the combined copy and one for the individual issues.
Supplementary material
Separately cataloged - Holdings data for supplementary materials that are separately numbered and separately cataloged are contained in fields 863 (Enumeration and Chronology-Basic Bibliographic Unit) and/or 866 (Textual Holdings-Basic Bibliographic Unit) in a holdings record associated with the bibliographic record for the supplementary material. The holdings record for the related bibliographic item does not contain holdings data for the supplementary material.
Not separately cataloged
Separately numbered - Holdings data for supplementary materials that are separately numbered but are not cataloged separately are contained in fields 864 (Enumeration and Chronology-Supplementary Material) and/or 867 (Textual Holdings-Supplementary Material) fields in the holdings record for the related item. Field 844 (Name of Unit) may contain the name of the supplementary material having a specified name or title. Holdings data for supplementary material that are not separately numbered (i.e., their numbering is related to a particular issue or volume of the related publication) are also contained in field 864 or field 867 in the holdings record for the related item.
853 20$81$av.$bno.$u12$vr$x01$wm$tc.
854 20$81$a(year)$oBuyers' guide$wa$tc.
863 40$81.1$a1-13$t1
864 40$81.1$a1956-1962$t1
[The serial is a regular monthly and issues a predicted annual Buyers' guide as an extra issue. The reporting organization holds v. 1-13, 1951-1963 with the Buyers' guide for 1956-1962.]
Not separately numbered - Holdings data for supplementary materials that are not separately numbered (i.e., their numbering is related to a particular issue or volume of the related publication) are also contained in field 864 or field 867 in the holdings record for the related item. In these cases the supplement designation is used as a caption in the relevant enumeration caption subfield ($a-$f) of field 853-855 (Captions and Pattern).
853 10$81$av.$i(year)$wa$tc.
854 10$81$av.$bsuppl.$i(year)$tc.
863 40$81.1$a1-28$i1951-1978$t1
864 40$81.1$a9$b1$i1959$t1
[The supplement numbering is related to a specific volume of the related publication. The reporting organization holds v. 1-8, 1951-1958; v. 9, 1959; v. 9, suppl. #1, 1959, and v. 10-28, 1960-1978.]
Holdings data for supplementary materials that have no numbering scheme or regularity are contained in subfield $z (Public note) of field 864 in the holdings record for the related item.
853 10$81$av.$i(year)
863 30$81.1$a1-20$i1985-2005
867 ##$zsuppl.
Indexes
Separately cataloged - Holdings data for indexes that are separately cataloged are contained in fields 863 (Enumeration and Chronology-Basic Bibliographic Unit) and/or 866 (Textual Holdings-Basic Bibliographic Unit) in a holdings record associated with the bibliographic record for the index. The holdings record for the related item does not contain holdings data for the separate index.

When a separately issued index covers volumes that are cataloged separately because of title changes, the index holdings are recorded in the holdings record for each title. A note is recorded in subfield $z (Public note) of field 865 (Enumeration and Chronology-Indexes) to clarify the location of the index.
Not separately cataloged - Holdings data for indexes that are not separately cataloged are contained in fields 865 (Enumeration and Chronology-Indexes) and/or 868 (Textual Holdings-Indexes) in the holdings record for the related bibliographic item.

If display of a range of indexes is desired, holdings for the individual indexes are recorded in 865 fields and the formatted display statement is carried in field 868 (Textual Holdings-Indexes).
Numbering irregularities - When an item is misnumbered, the correct numbering is contained in the applicable enumeration subfield and the misnumbering is contained in subfield $z (Public note).
863 40$81.1$a16-19$i1977-1980$zv. 19 misnumbered as 1,2,3,4,5,6,7,8,9,9,10,11.
[The last three monthly issues in v. 19 are misnumbered.]

CONTENT DESIGNATOR HISTORY

$o - Title of unit [NEW, 2006]
$v - Issuing date [NEW, 2006]
$x - Nonpublic note [NEW, 1987]
$z - Note [REDEFINED, 1987]
Prior to 1987, subfield $z included both public and nonpublic notes.

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