Whittow, J. B. The Penguin dictionary of physical geography / John B. Whittow. - 2nd ed. - New York : Penguin Books, 2000. - 590 p. : ill. ; 25 cm. ISBN: 0713912561 0140514503 LCCN: 83242697 Subjects--Topical Terms: Physical geography Dewey Class. No.: 910.020 / WHP