Keeton, William T. <br/><br/>
Elements of biological science / 
William T. Keeton ; illustrated by Paula DiSanto Bensadoun. 
 - New York :  Norton,  1969. 
 - xiii, 582 p. :  ill. ;  24 cm. 
<br/><br/> Includes index. 
<br/><br/>Includes bibliographical references. 
<br/><br/><label>ISBN: </label>393098303 (hbk.) 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Biology.