Leader (NR)
MARC 21 Holdings
October 2001
Indicators and Subfield Codes
No indicators or subfield codes; the data elements are positionally defined.
Character Positions
00-04 - Record length
05 - Record status
c - Corrected or revised
d - Deleted
n - New
06 - Type of record
u - Unknown
v - Multipart item holdings
x - Single-part item holdings
y - Serial item holdings
07-08 - Undefined character positions
# - Undefined
09 - Character coding scheme
# - MARC-8
a - UCS/Unicode
10 - Indicator count
2 - Number of character positions used for indicators
11 - Subfield code length
2 - Number of character positions used for a subfield code
12-16 - Base address of data
[number] - Length of Leader and Directory |
17 - Encoding level
1 - Holdings level 1
2 - Holdings level 2
3 - Holdings level 3
4 - Holdings level 4
5 - Holdings level 4 with piece designation
m - Mixed level
u - Unknown
z - Other level
18 - Item information in record
i - Item information
n - No item information
19 - Undefined character position
# - Undefined
20 - Length of the length-of-field portion
4 - Number of characters in the length-of-field portion of a Directory entry
21 - Length of the starting-character-position portion
5 - Number of characters in the starting-character-position portion of a Directory
entry
22 - Length of the implementation-defined portion
0 - Number of characters in the implementation-defined portion of a Directory entry
23 - Undefined
0 - Undefined |
FIELD DEFINITION AND SCOPE
First field of a separate holdings record. It is fixed in length at 24 character
positions (00-23). The Leader consists of data elements that contain numbers or coded
values that define the parameters for the processing of the record in an automated
system.
Character positions 20-23 comprise the Entry map for the Directory. They contain four
one-character numbers that specify the structure of the entries in the Directory. More
detailed information about the structure of the Leader is contained in MARC 21 Specifications for Record
Structure, Character Sets, and Exchange Media.
GUIDELINES FOR APPLYING CONTENT DESIGNATORS
■ CHARACTER POSITIONS
00-04 - Record length Computer-generated, five-character number equal to the length of the entire
record, including itself and the record terminator. The number is right justified
and each unused position contains a zero.
05 - Record status Relationship of the record to a file.
Used for file maintenance purposes.
c - Corrected or revised Addition or change has been made to the record.
d - Deleted Record has been deleted.
n - New Record is a newly input record.
06 - Type of record Characteristics and definitions of the components of the record. When holdings
information is embedded in a MARC bibliographic record, the Leader/06 code may be
contained in field 841 $a (Holdings Coded Data Values, Type of
record).
u - Unknown Record is a holdings record, but its type of holdings is unspecified.
v - Multipart item holdings Holdings statement is for a nonserial bibliographic item that is composed of
more than one physical part but is complete in a finite number of separate
physical parts, such as a multivolume monograph, a kit, a music score and
parts, a monograph with a multipart supplement.
x - Single-part item holdings Holdings statement is for a bibliographic item that is complete in a single
physical part, for example, a one-volume book, a single-part component of a
kit.
y - Serial item holdings Holdings statement is for a serial bibliographic item (that is, one issued in
successive parts and intended to be continued indefinitely).
07-08 - Undefined character positions Both are undefined; each contains a blank (#).
When holdings information is embedded in a MARC bibliographic record, these two
blanks and the Leader/06 code are contained in subfield $a (Type of
record) of field 841 (Holdings Coded Data Values), which is also embedded in the
bibliographic record.
09 - Character coding scheme Character coding scheme used in the record.
a - UCS/Unicode Code a indicates that the character coding in the record makes use of
characters from the Universal Coded Character Set (UCS) (ISO 10646), or
Unicode™, an industry subset.
When holdings information is embedded in a MARC bibliographic record, the
Leader/09 code may be contained in subfield $a (Type of record) of
field 841 (Holdings Coded Data Values), which is also embedded in the
bibliographic record.
10 - Indicator count Computer-generated number 2 that indicates the number of indicators occurring in
each variable data field.
(An indicator character position contains a code which conveys information that
interprets or supplements the data found in the field.) In MARC 21, two character
positions at the beginning of each variable data field are reserved for
indicators; therefore, the Indicator count is always 2.
2 - Number of character positions used for indicators
11 - Subfield code length Computer-generated number 2 that indicates the number of character positions used
for each subfield code in a variable data field.
(Each data element in a variable data field is identified by a subfield code.) In
MARC 21, a subfield code consists of a delimiter ($) and a lowercase
alphabetic or numeric data element identifier; therefore, the Subfield code count
is always 2.
2 - Number of character positions used for a subfield code
12-16 - Base address of data Computer-generated, five-character numeric string that specifies the first
character position of the first variable control field in a record. The number is
right justified and each unused position contains a zero.
Number is the base from which the starting character position of all the other
fields in the record is addressed in the Directory. (The starting character
position in the Directory entry for each field of the record is relative to the
first character of the first variable control field rather than the beginning of
the record.) The Base address of data is equal to the sum of the lengths of the
Leader and the Directory, including the field terminator character at the end of
the Directory.
[number] - Length of Leader and Directory
17 - Encoding level Level-of-specificity of the holdings statement. Codes 1, 2, 3, and 4 reflect the
requirements of Levels 1, 2, 3, and 4 of Holdings Statements for Bibliographic
Items (ANSI/NISO Z39.71) (formerly Serial Holdings Statements
(ANSI/NISO Z39.44)) and Holdings Statements for Non-Serial Items
(ANSI/NISO Z39.57)) and codes 1, 2, and 3 reflect the requirements of Levels 1, 2,
and 3 of Holdings Statements-Summary Level (ISO 10324). The MARC content
designators given in the description of each holdings level are the ones required
by Z39.71. Optional data elements for each level are not mentioned here; they are
given in each standard. A single-part item holdings statement is normally recorded
at level 1. A multipart or serial item holdings statement may be recorded at any
level.
When holdings information is embedded in a MARC bibliographic record, this
information may be contained in field 841 (Holdings Coded Data Values), subfield
$e (Encoding level), which is also embedded in the bibliographic
record.
1 - Holdings level 1 Holdings statement is formulated according to level 1 of the applicable
standard. Minimally, it consists of an item identifier for the
bibliographic item for which holdings are recorded and a location
identifier.
Item identifier may be contained in one of the following
fields:
| 004 |
Control Number for Related Bibliographic Record |
| 010 |
Library of Congress Control Number |
| 014 |
Linkage Number |
| 020 |
International Standard Book Number |
| 022 |
International Standard Serial Number |
| 024 |
Other Standard Identifier |
| 027 |
Standard Technical Report Number |
| 030 |
CODEN Designation |
Location identifier is contained in subfield $a
(Location) of field 852 (Location).
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| Leader/17 |
1 |
| 004 |
###86104385# |
| 852 |
##$aCSf$bSpCol |
2 - Holdings level 2 Holdings statement is formulated according to level 2 of the applicable
standard. Minimally, in addition to the requirements for level 1, it includes a
code in each of the following 008 (Fixed-Length Data Elements) and, when
appropriate, 007 (Physical Description Fixed Field) character positions:
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| 008/06 |
2
[Receipt or acquisition status 007/00 Category of material] |
| 008/12 |
4
[General retention policy 007/01 Specific material designation] |
| 008/16 |
8
[Completeness] |
| 008/26-31 |
891017
[Date of report] |
| 007/00 |
a
[Category of material] |
| 007/01 |
d
[Specific material designation] |
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| Leader/17 |
2 |
| 004 |
###86104385#
[Control number for related bibliographic record] |
| 008/06 |
4
[Code indicating item is currently received] |
| 008/12 |
8
[Code indicating holdings are permanently retained] |
| 008/16 |
2
[Code indicating reporting organization holds an incomplete published run
of the item] |
| 008/26-31 |
891017
[Date of the holdings report] |
| 852 |
##$aCSf$bSpCol |
3 - Holdings level 3 Holdings statement is formulated according to level 3 of the applicable
standard. Minimally, in addition to the requirements for level 2, it includes
summary holdings information, that is, holdings at the
first level of enumeration and chronology, in one or more of the following
holdings data fields:
| 853 |
Captions and Pattern-Basic Bibliographic Unit |
| 863 |
Enumeration and Chronology-Basic Bibliographic Unit |
| 866 |
Textual Holdings-Basic Bibliographic Unit |
| 854 |
Captions and Pattern-Supplementary Material |
| 864 |
Enumeration and Chronology-Supplementary Material |
| 867 |
Textual Holdings-Supplementary Material |
| 855 |
Captions and Pattern-Indexes |
| 865 |
Enumeration and Chronology-Indexes |
| 868 |
Textual Holdings-Indexes |
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| Leader/17 |
3 |
| 004 |
###86104385#
[Code number for related bibliographic record] |
| 008/06 |
4
[Code indicating item is currently received] |
| 008/12 |
8
[Code indicating holdings are permanently retained] |
| 008/16 |
2
[Code indicating reporting organization holds an incomplete published run
of the item] |
| 008/26-31 |
891017
[Date of the holdings report] |
| 852 |
##$aCSf$bSpCol |
| 853 |
00$81$ano.$i(year)$j(month) |
| 863 |
30$81.1$a180-242$i1976-1983 |
4 - Holdings level 4 Holdings statement is formulated according to level 4 of the applicable
standard. Minimally, in addition to the requirements for level 2, it includes
detailed holdings information, that is, the first and all
subsequent levels of enumeration and chronology in either itemized or
compressed form or a combination of the two, in one or more of the 853-855
Captions and Pattern, 863-865 Enumeration and Chronology, and 866-868 Textual
Holdings fields.
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| Leader/17 |
4 |
| 004 |
###86104385#
[Code number for related bibliographic record] |
| 008/06 |
4
[Code indicating item is currently received] |
| 008/12 |
8
[Code indicating holdings are permanently retained] |
| 008/16 |
2
[Code indicating reporting organization holds an incomplete published
run of the item] |
| 008/26-31 |
891017
[Date of the holdings report] |
| 852 |
##$aCSf$bSpCol |
| 853 |
00$81$ano.$i(year)$j(month) |
| 863 |
40$81.1$a180-226$i1976-1981 |
| 863 |
44$81.2$a222 |
| 863 |
40$81.3$a230$i1982$jApril |
| 863 |
40$81.4$a235$i1982$jDec. |
| 863 |
40$81.5$a237$i1983$jMar. |
| 863 |
40$81.6$a239-242$i1983$jJune-Oct.
[Multiple 863 fields contain detailed holdings statements for an
incomplete published run of the item.] |
5 - Holdings level 4 with piece designation Holdings statement includes physical piece designation that is contained in
subfield $p (Piece designation) of field 852 (Location, one of the
863-865 Enumeration and Chronology fields, or an 876-878 Item Information
field, or in subfield $a (Textual holdings) in one of the 866-868
Textual Holdings fields.
m - Mixed level Holdings are recorded at more than one level, for example, when the levels for
retrospective and current holdings differ. The value in the first indicator
position (Field encoding level) of the applicable 863-865 Enumeration and
Chronology and 866-868 Textual Holdings fields indicate the level for each
holdings data field.
u - Unknown
z - Other level Holdings statement does not meet any of the levels of specificity defined by
the other codes.
18 - Item information in record Whether item information is in the record, contained in one or more occurrences of
fields 876-878 (Item Information fields).
i - Item information Item information is in the record, contained in fields 876-878.
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| Leader/18 |
i
[Code indicating that item information is in record] |
| 852 |
8#$aTxAM$bTexas Documents$hUA242.7$iEn89 |
| 876 |
##$aAAH8128-2-1$c12.00$pA14812385910$qA14821385083$xRe-catalog as added copy for stacks when checked
in.
|
n - No item information
19 - Undefined character position Undefined and contains a blank (#).
20 - Length of the length-of-field portion Always a 4.
4 - Number of characters in the length-of-field portion of a Directory entry
21 - Length of the starting-character-position portion Always a 5.
5 - Number of characters in the starting-character-position portion of a Directory
entry
22 - Length of the implementation-defined portion In MARC 21, a Directory entry does not contain an implementation-defined
portion.
0 - Number of characters in the implementation-defined portion of a Directory entry
23 - Undefined
Undefined; always contains a 0.
INPUT CONVENTIONS
System-Generated Elements - The following Leader elements are usually system generated:
| 00-04 |
Logical record length |
| 07-08 |
Undefined character positions |
| 09 |
Character coding scheme |
| 10 |
Indicator count |
| 11 |
Subfield code count |
| 12-16 |
Base address of data |
| 19 |
Undefined character position |
| 20-23 |
Entry map |
It is common for default values in other Leader elements to be generated automatically
as well.
Capitalization - Alphabetic codes are input as lower case letters.
CONTENT DESIGNATOR HISTORY
06 - Type of record
v - Multipart Item Holdings [NEW, 1991]
Code v was added to distinguish multipart item holdings from serial item holdings.
Prior to that change, both multipart and serial items were contained in code y.
18 - Item information in record [NEW, 1994]
# - Undefined [OBSOLETE, 1994]