Authority 022 szerkesztése (szakasz)

== GUIDELINES FOR APPLYING CONTENT DESIGNATORS ==

:'''INDICATORS'''

::Both indicator positions are undefined; each contains a blank (#).

:'''SUBFIELD CODES'''

::'''$a - International Standard Serial Number'''
:::Valid ISSN for the continuing resource. ISSN may be generated for display.
									
::::'''022''' 	##$a0083-0674

::'''$l - ISSN-L'''
:::ISSN that links together various media versions of a continuing resource. ISSN-L may be generated for display.
									
::::'''022''' 	##$a1234-1231$l1234-1231

::'''$m - Canceled ISSN-L'''
:::Canceled ISSN-L that has been associated with the resource. Each canceled ISSN-L is contained in a separate subfield $m.
:::I''SSN-L (canceled)'' may be generated for display.
									
::::'''022''' 	##$a1560-1560$l1234-1231$m1560-1560

::'''$y - Incorrect ISSN'''
:::Incorrect ISSN that has been associated with the continuing resource. Each incorrect ISSN is contained in a separate subfield $y. A canceled ISSN is contained in subfield $z.
:::''ISSN (incorrect)'' may be generated for display.
									
::::'''022''' 	##$a0046-225X$y0046-2254

::'''$z - Canceled ISSN'''
:::Canceled ISSN that is associated with the continuing resource. Each canceled ISSN is contained in a separate subfield $z.
:::''ISSN (canceled)'' may be generated for display.
									
::::'''022''' 	##$a0410-7543$z0527-740X

::'''$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].