Crop physiology / 
U.S.Gupta 
 - New York :  Oxford & Butterworth Heinemann,  c1978 [Printing 1981]. 
 - xvi,431 p. :  ill. ;  24 cm. 
<br/><br/>Includes bibliographies and index. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Crops--Physiology.
<br/><br/><label>Dewey Class. No.: </label>631.5  / CRO 1981