Gourou, Pierre The tropical world its social and economic conditions and its future status. Translated by E.D. Laborde. - [2d ed.] - London New York Longmans, Green [1958] - 159 p. illus. 23 cm. - Geographies for advanced study . LCCN: 59000771 Subjects--Geographic Terms: Tropics LC Class. No.: G515 / .G63 1958 Dewey Class. No.: 910.913