The biology of crop productivity / 
edited by Peter S. Carlson. 
 - San Francisco :  Academic Press,  1980. 
 - xvii, 471 pages  illustrations  24 cm. 
<br/><br/>Includes bibliographies and index. 
<br/><br/><label>ISBN: </label>0121598500 
<br/><br/><label>LCCN: </label>79028261 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Crop yields.<br/>Crops--Physiology.
<br/><br/><label>LC Class. No.: </label>S494.5.P75  / B56 
<br/><br/><label>Dewey Class. No.: </label>631