Delorit, Richard J. <br/><br/>
Crop production/ 
by Richard J. Delorit, and Henry L. Ahlgren 
 - \\  2nd ed. 
 - Englewood Cliffs  Prentice-Hall  1959 
 - vi, 744p.: ill. 
<br/><br/> Includes index 
<br/><br/><label>LC Class. No.: </label>SB 185