Clark, Mary E <br/><br/>
Contemporary biology :  concepts and implications / 
by Mary E. Clark 
 - Philadelphia :  W. B. Saunders,  1973 
 - xiv, 632, A.44, xxxii p.  ill. ;  27 cm. 
<br/><br/>Includes bibliographies 
<br/><br/><label>ISBN: </label>0721625975 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Biology