Library of Congress >> MARC >> Community Information >> 6XX >> 651

651 - Subject Added Entry-Geographic Name (R)


MARC 21 Community Information - Full
October 2007

First Indicator
Undefined
# - Undefined

Second Indicator
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


Subfield Codes
Name portion
$a - Geographic name (NR)

Subject subdivision portion
$v - Form subdivision (R)
$x - General subdivision (R)
$y - Chronological subdivision (R)
$z - Geographic subdivision (R)
Control subfields
$0 - Authority record control number (R)
$2 - Source of heading or term (NR)
$3 - Materials specified (NR)
$6 - Linkage (NR)
$8 - Field link and sequence number (R)

FIELD DEFINITION AND SCOPE

Geographic name used as a subject added entry.

Subject added entries are assigned to a community information record to provide access according to generally accepted cataloging and thesaurus-building rules (e.g., Library of Congress Subject Headings (LCSH), Medical Subject Headings (MeSH)). Field 651 may be used by any institution assigning subject headings based on the lists and authority files identified in the second indicator position or in subfield $2 (Source of heading or term).

Jurisdiction names used alone or followed by subject subdivisions are contained in 651 fields. A corporate name, a title of a work, and/or a city section name entered under the name of a jurisdiction are contained in a 610 corporate name field. A name of a jurisdiction that represents an ecclesiastical entity is contained in a 610 field.


GUIDELINES FOR APPLYING CONTENT DESIGNATORS

INDICATORS

First Indicator - Undefined
Undefined and contains a blank (#).
Second Indicator - Thesaurus
Name and/or subject heading system or thesaurus used in constructing the subject heading.
0 - Library of Congress Subject Headings
Subject added entry conforms to and is appropriate for use in the Library of Congress Subject Headings (LCSH).LCSH is maintained by the Library of Congress.Conforms to LCSH is defined as:
  • geographic headings (or geographic headings and subdivisions) found in the LC authority files (including name authorities for non-natural features), or in the latest edition of LCSH, including the latest microfiche, printed version, CD-ROM, and supplements;
  • geographic headings for non-natural features constructed following AACR 2;
  • geographic headings found in the LC authority files, the latest edition of LCSH, or constructed following AACR 2 (for non-natural features only) to which is added a free-floating or regular subdivision according to the rules stated in the Subject Cataloging Manual: Subject Headings, particularly subdivisions listed in the pattern lists, and subdivisions formulated and applied according to the rules in the manual.
1 - LC subject headings for children's literature
Subject added entry conforms to the "AC Subject Headings" section of Library of Congress Subject Headingsand is appropriate for use in the LC Annotated Card Program.LCSH is maintained by the Library of Congress.
2 - Medical Subject Headings
Subject added entry conforms to and is appropriate for use in Medical Subject Headings (MeSH) and/or the NLMedicine name authority files.MeSH is maintained by the National Library of Medicine.
3 - National Agricultural Library subject authority file
Subject added entry conforms to the U.S. National Agricultural Library subject authority file.Requires that the field is appropriate for NAL subject heading purposes.
4 - Source not specified
Subject added entry conforms to a controlled list but the source cannot be specified by one of the subject heading system/thesauri covered by second indicator values 0-3, 5-6 or by a code for a specific subject heading list in subfield $2.Field 653 (Index Term-Uncontrolled) is used to record terms that are not derived from controlled subject heading lists.
5 - Canadian Subject Headings
Subject added entry conforms to and is appropriate for use in Canadian Subject Headings that is maintained by the Library and Archives Canada.
6 - Répertoire de vedettes-matière
Subject added entry conforms to the Répertoire de vedettes-matière that is maintained by the Bibliothèque l'Université Laval.
7 - Source specified in subfield $2
Subject added entry conforms to a set of subject heading system/thesaurus building rules other than that specified by one of the other defined values and for which identifying codes are given in subfield $2. Codes from: Subject Heading and Term Source Codes.

SUBFIELD CODES

$a - Geographic name
Topical subject or a geographic name used as an entry element for a topical term. Parenthetical qualifying information is not separately subfield coded.
651 #0$aAntietam National Battlefield (Md.)
651 #0$aKing Ranch (Tex.)
651 #0$aKenwood (Chicago, Ill.)
651 #0$aClear Lake (Iowa : Lake)
$v - Form subdivision
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 a geographic name.
$x - General subdivision
Subject subdivision that is not more appropriately contained in subfield $v (Form subdivision), subfield $y (Chronological subdivision), or subfield $z (Geographic subdivision). Subfield $x is appropriate only when a general topical subdivision is added to a geographic name.
651 #0$aTexas$xOfficials and employees.
$y - Chronological subdivision
Subject subdivision that represents a period of time. Subfield $y is appropriate only when a chronological subject subdivision is added to a geographic name.
651 #0$aNew York (N.Y.)$xHistory$y1951-
$z - Geographic subdivision
Geographic subject subdivision. Subfield $z is appropriate only when a geographic subject subdivision is added to a geographic name.
651 #0$aPittsburgh (Pa.)$xCommerce$zPennsylvania$zPhiladelphia.
$0 - Authority record control number
See description of this subfield in Appendix A: Control Subfields.
$2 - Source of heading or term
MARC code that identifies the source list from which the heading or term in a Subject Added Entry field was assigned. Code from: Subject Heading and Term Source Codes.
Used only when the second indicator position contains value 7 (Source specified in subfield $2).
$3 - Materials specified
Part of the described materials to which the field applies.
$6 - Linkage
See the description of this subfield in Appendix A: Control Subfields.
$8 - Field link and sequence number
See the description of this subfield in Appendix A: Control Subfields.

INPUT CONVENTIONS

Ambiguous Headings - See Appendix D.
Punctuation - Field 651 ends with a mark of punctuation or a closing parenthesis. If the final subfield is subfield $2, the mark of punctuation or closing parentheses precedes the $2 subfield.
651 #0$aChicago (Ill.)$xPolitics and government$y1951-
651 #7$aNew York (N.Y.)$2ericd

A geographic name followed by a subject subdivision does not end with a mark of punctuation unless the name ends with an abbreviation, initial/letter, or open date.
651 #0$aSt. Louis (Mo.)$xPolitics and government.
Spacing - No spaces are used in initialisms, acronyms, or abbreviations. One space is used between preceding and succeeding initials if an abbreviation consists of more than a single letter.
651 #0$aWashington (D.C.)
651 #0$aVienna (W. Va.)
Display Constant - The 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., Le) occurring at the beginning of geographic subject added entry 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.

CONTENT DESIGNATOR HISTORY

$0 - Authority record control number [NEW, 2007]

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