Molecular evolution / 
edited by Francisco J. Ayala. 
 - Sunderland, Mass. :  Sinauer Associates,  1976. 
 - x, 277 p. :  ill. ;  24 cm. 
<br/><br/>Includes bibliographical references (p. 237-262) and index. 
<br/><br/><label>ISBN: </label>0878930442 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Chemical evolution.