Kummel, Bernhard History of the earth an introduction to historical geology. - 2d ed. - San Francisco W. H. Freeman [1970] - xix, 707 p. illus., maps. 26 cm. - A Series of books in geology . Includes bibliographies. ISBN: 0716702495 LCCN: 73114579 Subjects--Topical Terms: Historical geology. LC Class. No.: QE651 / .K77 1970 Dewey Class. No.: 551.7