Carlson, P.S <br/><br/>
The biology of crop productivity/ ed by P.S. Carlson 
P Carlson 
 - New York  Academic Pr.  1980 
<br/><br/><label>ISBN: </label>0121598500 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Crop Yields
<br/><br/><label>LC Class. No.: </label>S 494.5 .P75B56 C.1-7