Delorit, Richard J.  1921- <br/><br/>
Crop production / 
Richard J. Delorit, Louis J. Greub Henry L. Ahlgren. 
 - 4th ed. 
 - Englewood Cliffs, N.J., :  Prentice-Hall,  [1973, c1974] 
 - 744 p. :  ill. 
 - Prentice-Hall vocational agriculture series .
<br/><br/><label>ISBN: </label>0131947613 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Field crops.