Delorit, Richard J.  1921- <br/><br/>
Crop production / 
by Richard J. Delorit and Henry L. Ahlgren 
 - 3rd ed. 
 - Englewood Cliffs, N.J. :  Prentice-Hall,  1967 
 - 662 p. :  ill., maps ;  25 cm. 
 - Prentice-Hall vocational agriculture series .
<br/><br/><label>LCCN: </label>67-003369 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Field crops