Keeton, William T. Elements of biological science / William T. Keeton, Carol Hardy McFadden. - 3rd ed. - New York : Norton, c1983. - xiv, 729 p : ill. ; 25 cm. Includes index. Subjects--Topical Terms: Biology. LC Class. No.: QH308.2 / .K442 1983 Dewey Class. No.: 574