Leet, L. Don. Physical geology L. Don Leet, Sheldon Judson, Marvin E. Kauffman. - 6th ed. - New Jersey Prentice Hall 1982. - xvi, 487 p. ill. Includes bibliographical references and index. ISBN: 0136697623 LCCN: Subjects--Topical Terms: Physical geology LC Class. No.: QE28.2 / .L43 1982 Dewey Class. No.: 550