Houbrick, Richard S. <br/><br/>
Anatomy, reproductive biology, and phylogeny of the Planaxidae (Cerithiacea: Prosobranchia) / 
Richard S. Houbrick. 
 - Washington, DC :  Smithsonian Institution Press,  1987. 
 - Smithsonian contributions to zoology ;  no. 445 .
<br/><br/> Shipping list no.: 87-478-P.  Includes index. 
<br/><br/>Bibliography: p. 52-55. 
<br/><br/><label>LCCN: </label>86600266 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Planaxidae.<br/>Snails.
<br/><br/><label>LC Class. No.: </label>QL1  / .S54 no. 445