Hughes, Harold D. <br/><br/>
Crop production :  principles and practices / 
Harold D. Hughes and Edwin R. Henson. 
 - Rev. ed. 
 - New York :  Macmillan,  c 1957. 
 - xii, 620 p. :  ill. ;  24 cm. 
<br/><br/> Includes index. 
<br/><br/>324  324 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Field & plantation crops.
<br/><br/><label>Dewey Class. No.: </label>633 / H874c