Heaslip, William Graham,  1928- <br/><br/>
Cenozoic evolution of the alticostate venericards in gulf and east coastal North America. 

 - Ithaca, N.Y.,  Paleontological Research Institution,  1968. 
 - [55]-135 p.  illus.  31 cm. 
 - Palaeontographica Americana,  v. 6, no. 39 .
<br/><br/><label>LCCN: </label>gs 68000134  
<br/><br/><label>Subjects--Topical Terms: </label><br/>Mollusks, Fossil--North America.<br/>Paleontology--Cenozoic.
<br/><br/><label>LC Class. No.: </label>QE701  / .I 82 v. 6, no. 39