Gilluly, James. Principles of geology / James Gilluly, A. C. Waters and A. O. Woodford. - 3rd ed. - San Francisco, Calif. : W. H. Freeman, c 1968. - 687 p. : ill. ; 25 cm. - A series of book in geology. . Includes index. 314 314 Subjects--Topical Terms: Geology. Dewey Class. No.: 550 / G419p