• UNIMARC is a family of metadata schemas with formats for descriptive information, classification, authorities and holdings. The UNIMARC activities are an IFLA Core Activity, the ICABS: IFLA-CDNL Alliance for Bibliographic Standards. • In 2004 the National Library of Portugal (BN) started an activity to develop a UNIMARC Registry. The purpose is to support the processes around the evolution of...