Hurd, Paul D., Jr. <br/><br/>
Ecology of the squash and gourd bee Peponapis pruinosa, on cultivated cucurbits in California (hymenoptera: Apoidea) 

 - Washington :  Smithsonian Institution,  1974 
 - 17 p.  : ilus. 
 - Smithsonian contributions to zoology  ; 168 .
 - Smithsonian contributions to zoology  ; 168 .
<br/><br/><label>LCCN: </label>17433 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Abejas.<br/>Cucurbitáceas.<br/>Peponapis pruinosa.<br/>Polen.