De Blij, Harm J. Human geography : culture, society, and space. - 7th ed. / - Islamabad : National Book Foundation, c2003. - xii, 555, 28, 10 p. : col. ill., col. maps ; 28 cm. ISBN: 0471441074 (alk. paper) Subjects--Topical Terms: Human geography.NUST Dewey Class. No.: 304.2 / BLJ