Hershler, Robert <br/><br/>
Arizona Hydrobiidae :  (prosobranchial rissoacea) / 
Robert Hershler, J. Jerry Landye 
 - Washington :  Smithsonian Institution Press,  1988 
 - 63 p. :  ill. ;  28 cm. 
 - Smithsonian contributions to zoology ;  no.459 .
<br/><br/><label>LCCN: </label>87-600195 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Pyrgulopsis--Classification--Arizona<br/>Tryonia--Classification--Arizona<br/>Mollusks--Classification<br/>Mollusks--Classification--Arizona