Delorit, Richard J.  1921- <br/><br/>
Crop production / 
Richard J. Delorit , Louis J. Greub, Henry L. Ahlgren 
 - 5th ed. 
 - Englewood Cliffs, N.J. :  Prentice-Hall ,  1984 
 - 768 p. :  ill., maps. ;  25 cm . 
 - Prentice-Hall agriculture series .
<br/><br/>Includes index 
<br/><br/><label>ISBN: </label>0131947532 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Agriculture--United States<br/>Field crops