a community effort to catalog works of science fiction, fantasy, and horror. It links together various types of bibliographic data: author bibliographies, publication bibliographies, award listings, magazine content listings, anthology and collection content listings, and forthcoming books.
From the ancient classics to the masterpieces of the 20th century, the Great Books are all the introduction you’ll ever need to the ideas, stories, and discoveries that have shaped modern civilization.
xISBN is a library web service that supplies International Standard Book Numbers (ISBNs) associated with individual intellectual works represented in the OCLC WorldCat database. Give it an ISBN, and it returns a list of associated ISBNs.