First Indicator | Second Indicator |
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Undefined # - Undefined |
Source of name, title, or term # - No information provided 7 - Source specified in subfield $2 |
Subfield Codes | |
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Subject added entry in which the entity type of the entry element is unspecified.
The field is used if no information is provided to identify the type of entity to which the subject heading belongs.
Subject headings which are not constructed by standard thesaurus-building conventions are recorded in field 653.
First Indicator - Undefined
Undefined and contains a blank (#).
Second Indicator - Source of name, title, or term
Subject heading system or thesaurus used in constructing the subject heading.
Indicates that the source of the name, title, or term is contained in subfield $2.
$a - Name, title, or term
Name, title, or term used as subject heading.
688 | #7$aVenus$0(DE-2581)TH000006586$2gbd |
688 | #7$aForum Romanum$0(DE-2581)TH000010820$2gbd |
$e - Relator term
Specifies the relationship between the heading and the described materials. More than one relationship term may be used if the entity has more than one relationship.
$g - Miscellaneous information
Data element that is not more appropriately contained in another defined subfield.
$0 - Authority record control number or standard number
See description of this subfield in Appendix A: Control Subfields.
688 | #7$aImmanuel Kant (1724 - 1804)$0(DE-2581)TH000005362$2gbd |
688 | #7$aNaturrecht$0(DE-2581)TH000006673$2gbd |
$1 - Real World Object URI
See description of this subfield in Appendix A: Control Subfields.
$2 - Source of name, title, or term
MARC code that identifies the source list from which the subject added entry was assigned. It is used only when the second indicator position contains value 7 (Source specified in subfield $2). Code from: Subject Heading and Term Source Codes.
688 | #7$aStoiker$0(DE-2581)TH000006637$2gbd |
688 | #7$aRoma Urbs$0(DE-2581)TH000010811$2gbd |
$3 - Materials specified
Part of the described materials to which the field applies.
$4 - Relationship
Code or URI that specifies the relationship from the entity described in the record to the entity referenced in the field. More than one relationship code or URI may be used if the entity has more than one relationship. A source of relationship codes is: MARC Code List for Relators.
$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.
Punctuation - Field 688 does not end with a mark of punctuation or a closing parenthesis unless punctuation is part of the data.