Other Libraries - Catalogues and Websites
European Library - Searches the content of European national libraries
Library Hub Discover - In a single search you can discover the holdings of the UK’s National Libraries (including the British Library), many university libraries, and specialist research libraries. This service replaces Copac and SUNCAT, providing access to a growing range of library catalogues, with a new interface style and updated search facilities, with more changes in the pipeline.
WorldCat - A catalogue of books and other materials in libraries worldwide