To answer the question: "With respect to the MARC HOLDINGS FORMAT is it
possible to have multiple MFHDs?"

If I understand your question, the answer is, "No, the USMARC Holdings format
does not accomodate multiple versions (i.e. different formats)

It does support multiple 852s (locations) but that is intended for multiple
copies of the same version/edition as the bibliographic record. So far,
MULTIPLE VERSIONS is not accomodated in either the USMARC format for
bibliographic data or in the USMARC Holdings format.

***************************************************************
* Mitch Turitz, Serials Librarian, San Francisco State U.     *
* Internet: TURITZ@SFSUVM.SFSU.EDU                            *
* Voice: (415) 338-7883  Fax: (415) 338-6199                  *