Delorit, Richard J. <br/><br/>
Crop production :  principles and practices / 
Richard J. Delorit and Henry L. Ahlgren. 
 - New York :  Prentice Hall,  c 1953. 
 - x, 629 p. :  ill. ;  23 cm. 
<br/><br/> Includes index. 
<br/><br/>318  318 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Agriculture.
<br/><br/><label>Dewey Class. No.: </label>633 / D384c