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