Thirty-ninth report 1939  / 
Roger B. Friend 
 - New Haven  :   Connecticut Agricultural Experiment Station 
 - p. 215-322 
 - Connecticut Agr. Exp. Sta. Bull.; 434 .
<br/><br/><label>LCCN: </label>202455 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Entomología -- Investigación