Krombein, Karl V.  x <br/><br/>
Trap-nesting wasps and bees ;   life histories, nests, and  associates 

 - x 
 - Washington  Smithsonian Press  1967 
 - vi, 570p. 
<br/><br/>
<br/><br/><label>ISBN: </label>x        
<br/><br/><label>Subjects--Topical Terms: </label><br/>Zoology Zoology 
<br/><br/><label>Dewey Class. No.: </label>591/KRT