Bowker provides products and services that make books easier to discover, evaluate, and experience-connecting publishers, authors, and booksellers with readers. From essential identifiers like ISBNs and barcodes...to editing and copyright protection services...to marketing and publicity tools, Bowker offers a wide range of tools and resource authors and publishers need to publish and promote their titles. As the official ISBN Agency for the United States and its territories, Bowker also provides information and advice on the uses of the ISBN system to publishers, self-publishers, authors, and book trade.