The biology of crop productivity / 
Ed. : P.S. Carlson 
 - New York :  Academic Press,  1980 
 - xvii, 471 p. :  ill. ;  24 cm. 
<br/><br/>Includes bibliographies and index. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Crop yields.<br/>Crops--Physiology.
<br/><br/><label>Subjects--Index Terms: </label>Năng suất cây trồng Sinh lý học Thu hoạch 
<br/><br/><label>Dewey Class. No.: </label>631  / BIO 1980