Serials can be at least as important as books in library research.
Serials are often the first places that new research and scholarship appear. The On-Line Books Page lists serials in much the same way as it lists ordinary books. Serials appear in a special serials listing , but they also appear in the title , subject , and new items listings intermingled with books. They also have listing criteria similar to the listing criteria used for books . That is, they must be either in the public domain, or on-line with the permission of the applicable copyright holders.