| First Indicator | Second Indicator |
|---|---|
| Nonfiling characters 0 - No nonfiling characters present 1-9 - Number of nonfiling characters present |
630 - Thesaurus 0 - Library of Congress Subject Headings 1 - LC subject headings for children's literature 2 - Medical Subject Headings 3 - National Agricultural Library subject authority file 4 - Source not specified 5 - Canadian Subject Headings 6 - Répertoire de vedettes-matière 7 - Source specified in subfield $2 730 - Undefined # - Undefined |
| Subfield Codes | |
|---|---|
|
Title portion
Subject subdivision portion
|
Control subfields
|
Subelements occurring in uniform or conventional title, title page title, or series title headings that are not entered under a name in a name/title heading and that are constructed according to the generally accepted cataloging and thesaurus-building rules (e.g., Anglo-American Cataloguing Rules (AACR 2), Library of Congress Subject Headings (LCSH)). A uniform title heading is used to bring together bibliographic entries for a work when various issues have appeared under different titles and to provide identification for a work when the title by which it is known differs from the title proper of a particular issue or when different publications have identical titles. A uniform title entered under a name is contained in field 245 or in subfield $t (Title of a work) in the field appropriate for the author's name (X00, X10, X11). Uniform titles used in phrase subject headings (e.g., Bible in atheism) are contained in field 650 (Subject Added Entry-Topical Term).
Guidelines for applying all content designators except the second indicator position are given in this section. A field-specific list of content designators and guidelines for applying the second indicator position are provided under the description for each specific X30 field.
First Indicator - Nonfiling characters
Number of character positions associated with a definite or indefinite article (e.g., Le, An) at the beginning of a publication title that are disregarded in sorting and filing processes.
No initial article character positions are disregarded.
| 730 | 0#$aWCSS Newsletter. | ||||||||
Diacritical marks or special characters at the beginning of a publication title field that does not begin with an initial article are not counted as nonfiling characters. Initial definite or indefinite articles may also simply be deleted in the formulation of the publication title field. If the initial article is retained but is not to be disregarded in sorting and filing processes, value 0 is used.
| 730 | 0#$aLos Angeles Times. | ||||||||
Title begins with a definite or indefinite article that is disregarded in sorting and filing processes. Any diacritical mark, space or mark of punctuation associated with the article and any space or mark of punctuation preceding the first filing character after the article is included in the count of nonfiling characters. Any diacritic, however, associated with the first filing character is not included in the count of nonfiling characters.
Second Indicator
Unique to the function of the uniform title field. It is described under the following fields: 630 (Subject Added Entry - Uniform Title) and 730 (Added Entry - Uniform Title).
$a - Title
Publication title, exclusive of any name or number of a part/section.
| 630 | 00$aNew York Times. | ||||||||
| 581 | 8#$aPublishes newsletter, Inwood Neighborhood Advocate. | ||||||||
| 730 | 0#$aInwood Neighborhood Advocate. | ||||||||
$f - Date of a work
Date of publication associated with a publication title.
$n - Number of part/section of a work
Number designation for a part/section of a publication title. Numbering is defined as an indication of sequencing in any form, e.g., Part 1, Supplement A, Book 2.
| 630 | 00$aSouthern Reporter.$nSecond Series. | ||||||||
Part/section designation that is an inversion of a named part that includes a number or a named part that includes chapter and/or verse numbers is contained in subfield $p.
| 630 | 00$aBible.$pN.T.$pCorinthians, 1st. | ||||||||
Multiple numberings for parts/sections separated by a comma (which are usually alternative numberings) are contained in a single subfield $n.
$p - Name of part/section of a work
Name designation of a part/section of a publication title.
| 630 | 00$aRecherches Morales.$pDocuments. | ||||||||
Named part that indicates a subpart to the first noted part/section is contained in a separate subfield $p.
$s - Version
Version, edition, etc., associated with a publication title.
$v - Form subdivision [630]
Form subdivision that designates a specific kind or genre of material as defined by the thesaurus being used. Subfield $v is appropriate only when a form subject subdivision is added to uniform title heading.
$x - General subdivision [630]
Subject subdivision that is not more appropriately contained in subfields $v (Form subdivision), $y (Chronological subdivision) or $z (Geographic subdivision). Subfield $x is appropriate only when a general topical or form subject subdivision is added to a publication title.
$y - Chronological subdivision [630]
Subject subdivision that represents a period of time. Subfield $y is appropriate only when a chronological subject subdivision is added to a publication title.
$z - Geographic subdivision [630]
Geographic subject subdivision. Subfield $z is appropriate only when a geographic subject subdivision is added to a publication title.
| 630 | 00$aBible$zTennessee$zBedford County. | ||||||||
$0 - Authority record control number or standard number
See description of this subfield in Appendix A: Control Subfields.
$1 - Real World Object URI
See description of this subfield in Appendix A: Control Subfields.
$2 - Source of heading or term [630]
MARC code that identifies the source list from which the heading or term in a Subject Added Entry field was assigned. It is used only when the second indicator position contains value 7 (Source specified in subfield $2). Code from: Subject Heading and Term Source Codes.
$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.
Ambiguous Headings - See Appendix D.
Punctuation - Fields 630 and 730 ends with a mark of punctuation or a closing parenthesis. If the final subfield is subfield $0 or $2, the mark of punctuation or closing parenthesis precedes the subfield.
| 630 | 00$aTalmud$xGlossaries, vocabularies, etc. | ||||||||
Mark of punctuation is placed inside a closing quotation mark. A publication title followed by a subject subdivision does not end with a mark of punctuation unless the title ends with an abbreviation or an initialism.
Spacing - No spaces are used in initialisms. One space is used between preceding and succeeding initials if an abbreviation consists of more than a single phrase (e.g., W. Va.).
| 630 | 00$aSpecial Publication of the IEEE Power Engineering Society. | ||||||||
| 630 | 00$aBible.$pN.T.$pMatthew. | ||||||||
Display Constant - Dash (-) that precedes a subject subdivision in an extended subject heading is not carried in the machine-readable record. It may be system generated as a display constant associated with the content of subfields $v, $x, $y, and $z.
Initial Articles - Initial articles (e.g., The) occurring at the beginning of publication title fields are usually omitted in most languages (except when the intent is to file on the article). Any diacritics and/or special characters occurring at the beginning of fields are retained. Note that such characters are usually ignored for purposes of sorting and filing.
| 630 | 00$aLos Angeles Times. | ||||||||