Raven, Peter H. Understanding biology / Peter H. Raven, George B. Johnson. - 3rd ed. - Dubuque, IA : Wm. C. Brown Publishers, c1995. - xxxi, 872 p. : chiefly col. ill., maps ; 29 cm. Includes bibliographical references and index. ISBN: 0697263274 9780697222312 LCCN: 94072422 Subjects--Topical Terms: Biology. LC Class. No.: QH308.2 / RAV 1995b Dewey Class. No.: 574