Thornbury, William D. Principles of geomorphology / William D. Thornbury. - 2nd ed. - New Delhi : CBS publihsers, 2002. - x, 594p. : fig. ; 22x15 cm. Includes bibliographical references and index. ISBN: 81-239-0811-3: Rs. 275 Subjects--Topical Terms: GEOMORPHOLOGY Dewey Class. No.: 551.4 / THO-PRI