Beltsville Symposia in Agricultural Research <br/><br/>
Biological control in crop production 

 - Granada  Allanheld Osmun  1981 
 - 461p 
<br/><br/>Beltsville Symposia in Agricultural Research: Biological control in crop production.  Granada.  Allanheld Osmun, 1981. 0-246-115122--(632.9606BEL)   
<br/><br/><br/>ENGLISH 
<br/><br/><label>ISBN: </label>0-246-115122 
<br/><br/><label>Dewey Class. No.: </label>632.9606  / BSA