Proceedings of the Entomological Society of Ontario. Vol. 91    (Book) 

 - Ontario  Ministry of Agriculture  1960 
 - 292 p.  25 cm. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Entomology--Canada
<br/><br/><label>Universal Decimal Class. No.: </label>595.7 PRO  / 11573