Sparks, Donald L.  <br/><br/>
Advances in agronomy 

 - San Diego  Academic Press  2009 
 - ix,272p.  23cm 
<br/><br/><label>ISBN: </label>9780123748201 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Agronomy
<br/><br/><label>Dewey Class. No.: </label>630  / ADV