Authority 024 szerkesztése (szakasz)

== 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