Authority 024 szerkesztése

<p align="right">[[Kezdőlap]] - [[A MARC21 authority formátum]] - [[Authority 01X-09X]]</p>

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== First Indicator ==

:''Type of standard number or code''
:7 - Source specified in subfield $2
:8 - Unspecified type of standard number or code


== Second Indicator ==

:''Undefined''
:'#' - Undefined

	

== Subfield Codes ==

:$a - Standard number or code (NR)
:$c - Terms of availability (NR)
:$d - Additional codes following the standard number or code (NR)
:$z - Canceled/invalid standard number or code (R)
:$2 - Source of number or code (NR)
:$6 - Linkage (NR)
:$8 - Field link and sequence number (R)


== FIELD DEFINITION AND SCOPE ==


:Standard number or code associated with the entity named in the 1XX field which cannot be accommodated in another field (e.g., fields 020 (International Standard Book Number) and 022 (International Standard Serial Number)). The source of the standard number or code is identified in subfield $2 (Source of number or code).

:Subfields in this field are defined for consistency with field 024 in the [http://www.loc.gov/marc/bibliographic/ecbdhome.html MARC 21 Format for Bibliographic Data].


== GUIDELINES FOR APPLYING CONTENT DESIGNATORS ==

:'''INDICATORS'''

:'''First Indicator - Type of standard number or code'''

::'''7 - Source specified in subfield $2'''

::'''8 - Unspecified type of standard number or code'''

:'''Second Indicator - Undefined'''
::Contains a blank (#).

:'''SUBFIELD CODES'''
::'''$a - Standard number or code'''

::'''$c - Terms of availability'''
:::Terms of availability and/or qualifying information related to other information in the field.

::'''$d - Additional codes following the standard number or code'''
:::Any optional digits carried to the right of the number or code.

::'''$z - Canceled/invalid standard number or code'''
:::If a valid number or code of the same type is not known, subfield $z may appear alone in field 024.

::'''$2 - Source of number or code'''
:::MARC code that identifies the source of the number or code. Used only when the first indicator contains value 7 (Source specified in subfield $2). Code from: [http://www.loc.gov/standards/sourcelist/standard-identifier.html Standard Identifier Source Codes].

::'''$6 - Linkage'''
:::See description of this subfield in Appendix A: [http://www.loc.gov/marc/authority/ecadcntf.html Control Subfields].

::'''$8 - Field link and sequence number'''
:::See description of this subfield in Appendix A: [http://www.loc.gov/marc/authority/ecadcntf.html Control Subfields].

:'''EXAMPLES'''
									
::'''024''' 	7#$aT-345246800-1$2iswc
::'''024''' 	7#$a0A9-2002-12B4A105-6$2istc

==INPUT CONVENTIONS ==

:'''Structure''' - Other Standard Identifiers are unique, permanent and internationally recognized alphanumeric codes used to identify works and expressions. The codes may be defined by the ISO (International Organization for Standardization) and assigned by designated agencies. Some examples of these identifiers include the ISTC (International Standard Text Code), the ISWC (International Standard Musical Work Code), and the ISAN (International Standard Audiovisual Number). The structure of these numbers is determined by the agencies formulating them. 


<p align="right">[[Kezdőlap]] - [[A MARC21 authority formátum]] - [[Authority 01X-09X]]</p>