Discover available bibliographic record indexes available for searching in WorldCat, values and criteria for each Format/Document and Material Type index, and RDA terms and codes.
RDA, or Resource Description and Access, is the proposed successor to AACR2. The tables in this guide show RDA content, media, and carrier type terms and codes that may occur in fields 336, 337, and 338 of records (term in ‡a; corresponding code in ‡b).