Keen, A. Myra  1905- <br/><br/>
Marine molluscan genera of western North America  / 
A. Myra Keen & Eugene Coan 
 - 2nd ed. 
 - Stanford, Cal :  Stanford University Press,  1974 
 - vi, 208 p. :  ill. ;  24 cm . 
<br/><br/>Includes bibliographical references and indexes 
<br/><br/><label>ISBN: </label>0804708398 
<br/><br/><label>LCCN: </label>73-080625 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Mollusks--Identification--Pacific Coast (North America)