Spangles, Paul J. <br/><br/>
A revision of the neotropical aquatic beetle genera Disersus, Pseudodisersus, and Potamophilops (Coleoptera : Elmidae) 

 - Washington :  Smithsonian Institution,  1987 
 - 40 p.  : ilus. 
 - Smithsonian contributions to zoology  ; 446 .
 - Smithsonian contributions to zoology  ; 446 .
<br/><br/><label>LCCN: </label>57778 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Disersus.<br/>Escarabajos.<br/>Potamophilops.<br/>Pseudodisersus.