Principles of field crop production 
Martin John H., Waldren Richard P., Stamp David L. 
 - 4th ed.  
 - New Jersey :  Pearson / Prentice Hall,  2006. 
 - xxi,954 p. ;  ill, ; 
<br/><br/><label>ISBN: </label>0130259675 
<br/><br/><label>LC Class. No.: </label>SB187  / .M37 2006