n78% of works
have a single manifestation
n99% of all
works in WorldCat have seven manifestations or less
n30,000, or
<1% have more than 20 manifestations
nR. Bennett et. al. (2003) "The
concept of a work in WorldCat: an application of FRBR" Library Collections Acquisitions & Technical
Services 27, 45-59.
n
nSo why
do we need FRBR?
n