You will recognize periodicals because in the shelflist, periodical check-in will be written in red in the upper right of the card . If there are bound volumes there will be a bound card in addition to the holdings card. On microfiche, write the call number on the envelope in black in the upper left corner and stamp cataloged underneath the call number Periodicals are checked in on a serial check-in card, which may or may not be attached to a cataloging record. These holdings are transferred to the shelflist annually if the title has not been worked on and displayed in the GPO project. The latest year's holdings for periodical titles we current receive is on this card, so you will find holdings beyond what is in the shelflist.
Periodical items have special coding in the fixed fields of the item.
See the procedure on periodical item records for that information.