Duff, P. McL. D. Holmes' principles of physical geology / P. McL.D. Duff. - 4th ed. - London ; New York : Chapman & Hall, 1996. - xvi, 791 p. : ill. (some col.), maps (some col.) ; 29 cm. Includes bibliographical references and index. ISBN: 0412461900 LCCN: 92032079 Subjects--Topical Terms: Physical geology. LC Class. No.: QE28.2 / .D84 1993 Dewey Class. No.: 550 / DUH