WorldCat (the OCLC Union Catalog) of books, periodicals, magazines, newspapers, maps, computer data files, manuscripts, scores, sound recordings and any other type of material cataloged by OCLC member libraries. The database includes records for material from the 11th century to date. New records are added daily.
The site is a entry point to the catalogs of 48 European national libraries and many research libraries. This would be a good tool to use in tandem with WorldCat.
How to use subject headings
Always look for the controlled vocabulary associated with the catalog or database entry. Click on the links in order to find other materials on your subject that you may not find as easily through your own keyword search.
Throughout the Francophone world, national libraries contain items that may not be available elsewhere. If you find an item in one of these libraries' catalogs, you may request it through DartDoc.