If an LCRI is labelled “LC practice” does this mean BIBCO libraries must also follow the practice?
No. As stated in the Introduction secion of the LCRIs issued on September 1996 ” … the introductory phase “LC practice” signals a practice applicable solely to LC; it is discretionary for other libraires.” It is only when an LCRI is labelled “PCC practice” or “LC/PCC practice” that bibliographic cataloging contributed to either the BIBCO or CONSER program must follow the guidance.