Advanves in Agronomy V-1,V-3,V-4,V-12 

 - New York  AcadamicPress Inc,Publishers  1951 
<br/><br/><label>ISBN: </label>12-000703-7 
<br/><br/><label>LC Class. No.: </label>630/ADV  / 4 
<br/><br/><label>Dewey Class. No.: </label>630/ADV  / 4