N.S. Novotelnova <br/><br/>
Downy mildew of sunflower 

 - 258p 
<br/><br/>N.S. Novotelnova: Downy mildew of sunflower. --(633.85NOV)   
<br/><br/><br/>ENGLISH 
<br/><br/><label>Dewey Class. No.: </label>633.85  / NOV