Raven, Peter H. Understanding biology / - 3rd ed. - Dubuque, IA : Wm. C. Brown Publishers, c1995. - 1 v. (various pagings) : chiefly col. ill., maps ; 29 cm. ISBN: 0697263274 0697222136 (cover) Subjects--Topical Terms: Biology. Dewey Class. No.: 574 WMC 1995 A081 Or.