Hall, Clarence A. <br/><br/>
Evolution of the echinoid genus astrodapsis /. 
by Clarence A. Hall. 
 - Berkeley ;  Los Angeles :  University of California Press,  1960. 
 - 281-308 p.  illus. ;  26 cm. 
 - University of California publications in geological sciences,  v. 40, no. 2 .
<br/><br/><label>Subjects--Topical Terms: </label><br/>Astrodapsis--California.