Petr, J.  <br/><br/>
Yield formation in the main field crops  (Book) 

 - Amsterdam  Elsevier  1988 
 - 336 p.  24 cm. 
<br/><br/><label>ISBN: </label>0444989544 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Crop yields Field crops
<br/><br/><label>Universal Decimal Class. No.: </label>633 PET  / 2476