Kew, William S.W. <br/><br/>
Cretaceous and Cenozoic Echinoidea of the Pacific Coast of North America 

 - Berkeley, CA  University of California Press  September 1920 
 - pp. 23-236 
<br/><br/><label>Subjects--Topical Terms: </label><br/>CENOZOICO<br/>CRETACEO<br/>ECHINOIDEA
<br/><br/><label>Subjects--Geographic Terms: </label><br/>ESTADOS UNIDOS