WAPSHERE, A. J. <br/><br/>
Proceedings of the International Symposium on Biological Control of Weeds 

 - England  Commonwealth Agricultural bur  eaex       1973 
 - viii, 140p 
<br/><br/><label>ISBN: </label>0 85198 307 3 
<br/><br/><label>Dewey Class. No.: </label>632.96