Clark, Bruce L. <br/><br/>
Pelecypoda from the marine Oligocene of Western North America 

 - Berkeley, CA  University of California Press  January 1925 
 - pp. 69-136 
<br/><br/><label>Subjects--Topical Terms: </label><br/>OLIGOCENO<br/>PELECYPODA
<br/><br/><label>Subjects--Geographic Terms: </label><br/>ESTADOS UNIDOS