Sheaffer, Craig C. <br/><br/>
Introduction to Agronomy :   Food, Crops, and Environment / 

 - 2nd ed. 
 - United States.  Cengage Learning, Inc.  (2012). 
 - xvi, 679 p. ;  ill. col.  21 x 3 x 26 cm  Includes Glossary and Index. 
<br/><br/> An introduction to Agronomy. 
<br/><br/><label>ISBN: </label>9781111312336 
<br/><br/><label>Dewey Class. No.: </label>630  / SHE