Dover Publications (doverpublications.com) Dover has a great selection of affordable math and science texts.
Quail Ridge Press (www.quailridge.com) Site includes regional cookbooks (Best of the Best Series) and children's titles.
Identifier Services - Bowker (www.myidentifiers.com) Bowker is the exclusive U.S. Registration Agency for ISBNs for publishers, providing a host of Identifier registration and production capabilities
Readerlink Distribution Services, LLC (readerlink.net) Readerlink Distribution Services is a full-service distributor of hardcover, trade and paperback books to non-trade channel booksellers in North America, including the biggest names in retail across multiple retail channels.