Krombein, Kall V. <br/><br/>
Trap-nesting wasps and bees : life histories nests and associates 

 - Washington  Smithsonian press   1967 
 - 570p.,29pl.,  22 cm 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Insect
<br/><br/><label>Universal Decimal Class. No.: </label>595.7  / KRO