Colleagues have already expressed their concern about the vanishing
of FRBR Expression entity in Zepheira's "BIBFRAME" model,
but I was rather puzzled by this:
"Each BIBFRAME Instance is an instance of one and,only one BIBFRAME
Work." P. 10.
What about (FRBR) Manifestations embodying more than one (FRBR) Work
then? Will there be something like compound (BIBFRAME) instances? Or
will the aggregation be done at the (BIBFRAME) Work level?