Gilluly, James, 1896-1980. Principles of geology [by] James Gilluly, Aaron C. Waters [and] A. O. Woodford. - 3d ed. - San Francisco, W. H. Freeman [1968] - 687 p. illus. (part col.), maps (part col.) 26 cm. - A Series of books in geology . Includes bibliographies. LCCN: 68014228 Subjects--Topical Terms: Geology. LC Class. No.: QE26 / .G5 1968 Dewey Class. No.: 550