Arrangement of FRBR Entities in Colon Classification Call Numbers

This paper analyzes similarities and differences between FRBR entities and their representation in the Colon classification call numbers. Dealing with lack of organization in library shelves and in the lists of bibliographic records resulting from users' searches in our present online catalogues, the paper discusses the chance to organize bibliographic resources by FRBR entities using the model of the facet formula provided for call numbers in Colon Classification and by means of relevant, ready and useable extant data. Main results of this analysis are: correspondences between FRBR entities and categories expressed in Ranganathan's bibliographic system can be found; a sound but not completely FRBRized bibliographic arrangement can be reached by call numbers also in catalogues not structurally capable to satisfy FRBR model; in Ranganathan's classified catalogue semantic and semiotic cataloguing are perfectly integrated, giving access to bibliographic universe as a whole; facet formula for call numbers could be used as identifying device.