Spangler, Paul J. <br/><br/>
A revision of the neotropical aquatic beetle genus stenhelmoides (coleop  elmidae) 
paul J.spangler and philip D.perkins 
 - Washington  Smithsonian Institution Press  1989 
 - 63 p. ill. ; 28 cm. 
 - Smithsonian contributions to zoology  no.479 .
<br/><br/><label>LCCN: </label>89-600107 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Stenhelmoides--Latin America--classification