Bowker? is the world's leading provider of bibliographic information, connecting publishers, authors, and booksellers with readers. With an expanded focus on Identifier Services (myidentifiers.com), Bowker provides tools to help authors promote and sell their books — and resources, such as the Books In Print? database — to help make their titles more discoverable. Bowker, a ProQuest affiliate, is the official ISBN Agency for the United States and Australia.