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321 - Former Publication Frequency (R)


MARC 21 Bibliographic - Concise
2007

Former publication frequency of either an item or an update to an item when a current publication frequency is given in field 310 (Current Publication Frequency).

Indicators
First - Undefined
# - Undefined
Second - Undefined
# - Undefined
Subfield Codes
$a - Former publication frequency (NR)
$b - Dates of former publication frequency (NR)
$6 - Linkage (NR)
See description of this subfield in Appendix A: Control Subfields.
$8 - Field link and sequence number (R)
See description of this subfield in Appendix A: Control Subfields.
Examples
321 ##$aTen no. a year,$b1982-1984
321 ##$aMonthly,$bMar. 1972-Dec. 1980
321 ##$aSemiannual,$b1981-1982
321 ##$aFrequency varies,$b1966-1983
321 ##$aFrequency of update varies
321 ##$aUpdated monthly,$b1998-2000

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