IFLA/FRBR (Functional Requirements for Bibliographic Records) provides a structuredframework (conceptual model) for relating the data which are recorded in bibliographic recordsto identify information resources. IFLA/FRBR has 4 bibliographic entities (work, expression,manifestation, item) in its conceptual model. ISWC (ISO Z 57071nformation and documen tation-lnternational Stanaant Musical VVork