WorldCat
WorldCat is an online library catalogue covering the print and electronic collections of about 10,000 libraries, including national, academic, special and public libraries. Although it has contributing libraries from all over the world, the majority are based in the US or Europe. WorldCat has basic and advanced search facilities and it covers book, serials and other material on all subjects. Search results can be sorted and filtered, and WorldCat will tell you if a particular item is held in a nearby library.