Cox , Joseph F <br/><br/>
Crop Management  and Soilo Conservation 

 - 2nd 
 - New York  John Wiley and Son  1937 
 - 572 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Plant Physiology
<br/><br/><label>Dewey Class. No.: </label>631  / C83C