Copac

Copac is a union catalogue which provides free access to the merged online catalogues of many major research libraries and specialist libraries in the United Kingdom and Ireland, plus the British Library, the National Library of Scotland and the National Library of Wales. It has over 40 million records from around 90 libraries, representing a wide range of materials across all subject areas. Copac is freely available to all, and is widely used, with users mainly coming from UK Higher Education, but also worldwide. Users value Copac highly as a research tool.