Books in Print
Provides pricing and other information on in- and out-of-print and forthcoming books. From R.R. Bowker.
Ulrich's Periodicals Directory
Provides publication information on serials published throughout the world. Search by title, keyword, or subject. Includes titles published regularly or irregularly and circulated free of charge or by paid subscription. Includes reviews from Magazines for Librariesand Library Journal. Updated weekly.