Adler, Philip J. World civilizations / Philip J. Adler, Randall L. Pouwels - 6th ed. - Boston : Wadsworth/Cengage Learning, c2012 - 1 v. (various pagings) bcol. ill., col. maps ; 29 cm. Includes bibliographical references and index ISBN: 9780495913009 (student ed.) 0495913006 (student ed.) Subjects--Topical Terms: Civilization--History--Textbooks