321 - FORMER PUBLICATION FREQUENCY (R)

The former frequency of either an item or an update to an item when a current frequency is contained in field 310.

Indicators

Subfield Codes

Examples


321

##$aTen no. a year $b1982-1984

321

##$aMonthly $bMar. 1972-Dec. 1980

321

##$aSemiannual $b1981-1982

321

##$aFrequency varies $b1966-1983

321

##$aUpdated monthly $b1998-2000

321

##$aFrequency of update varies