I
don't know that I would consider this Instance information under the BIBFRAME definition of Instance. A lot of it (call number, shelf location, library service) seems more like item information, and might be a library annotation. It's related to a specific
library's copy of an Instance.
I'm also still a little baffled about BIBFRAME's use of Work. I can't figure out whether it's closer to FRBR's concept of Work (conceptual essence) or Expression. Personally, I think something closer to Expression would be more
important for libraries' goals, and the line seems very blurred to me, here. Are we describing a particular expression of a conceptual essence, or the concept/idea itself? Or both? I suppose I will have to anxiously await the release of the Creative Work
discussion paper. (Though your suggestion to go back to the Primer was a very useful one.)
Laura
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