COPAC provides FREE access to the merged online catalogues of 21 of the largest university research libraries in the UK and Ireland. Most COPAC records represent monographs (books, reports etc.) "with 4% of records representing periodicals and another 3% conferences". Other materials include videos, printed and recorded music, and electronic materials. "COPAC records represent documents dating from c.1100 AD onwards, in many languages. A variety of materials are included and some records include links to the document full-text."