Krombein, Karl V. <br/><br/>
Biosystematic studies of Ceylonese WASPS, XIX :  natural history notes in several families (Hymenoptera, cumeniade, vespidae,pompilidae, and crabronidae) / 
Karl V. Krombein 
 - Washington :  Smithsonian Institution Press,  1991 
 - 41 p. :  ill. ;  28 cm. 
<br/><br/><label>LCCN: </label>82-600154 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Wasps--Classification--Sri Lanka