Cataloging Source Code Input standards Mandatory.
All formats Use to indicate the original cataloging source of the record.
If your are inputting original cataloging on a workform or new record, enter blank , c , or d in Srce . OCLC users at national bibliographic agencies will enter blank . All other OCLC users will enter d . Formerly used only for Library of Congress cataloging records. Now used for records from other national bibliographic agencies as well.