Hershler, Robert. <br/><br/>
A review of morphological characters of hydrobioid snails 
Robert Hershler and Winston F. Ponder. 
 - Washington, DC  Smithsonian Institution Press  1998. 
 - p. cm. 
 - Smithsonian contributions to zoology  610  no. 600 .
<br/><br/>Includes bibliographical references. 
<br/><br/><label>LCCN: </label>98005672  
<br/><br/><label>Subjects--Topical Terms: </label><br/>Hydrobiidae--Morphology.<br/>Mesogastropoda--Morphology.
<br/><br/><label>LC Class. No.: </label>QL1  QL430.5.H9  / .S54 no. 600 
<br/><br/><label>Dewey Class. No.: </label>590 s  571.3/1432