Walker, John R., 1944- Tourism : concepts and practices / John R. Walker, Josielyn T. Walker. - Boston : Prentice Hall, c2011. - xxxviii, 537 p. : col. ill., col. maps ; 27 cm. Includes bibliographical references and index. ISBN: 9780138142452 (hbk.) 0138142459 (hbk.) Subjects--Topical Terms: Tourism. Dewey Class. No.: 338.4791 / WAL 2011