De Blij, H. J. Concepts and regions in geography / H.J. de Blij, Peter O. Muller ; with media integration by Eugene J. Palka. - 1st. - New York : J. Wiley, c2003. - xviii, 348 p. : ill. ; 25 CM.+ Includes bibliographical references and index. LC Class. No.: DUCE G128.D394