*Functional Requirements for Bibliographic Records (FRBR)* 👇👇 👉 FRBR “Group 1” entities work, expression, manifestation, and item, 👉 FRBR’s “Group 2” entities are person and corporate body 👉 FRBR “Group 3” entities are the entities of works. These can be concepts, objects, events, places, and any of the “Group 1” or “Group 2” entities.