MARC Components and Content
Changes in Physical Format
Fixed-Length Data Elements & Leader. For original microforms, code MARC fixed field elements for the microform, as instructed by the CEG. Two elements, 008/23 Form of item (“Form” on OCLC) and 008/22 Form of original item (“Orig” on OCLC) are also coded. Both elements are coded because the form of item (e.g., microfiche) is also the form of the original. (CCM:32.2.1g)
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