Behrens, David W.  <br/><br/>
Pacific Coast nudibranchs:  Alaska to Baja California / 
by David W. Behrens. 
 - 2nd ed. (rev.) 
 - Monterey, Calif:  Sea Challengers,  1991. 
 - 107 pages :  illustrations ;  22 cm. 
<br/><br/><label>ISBN: </label>0930118170 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Nudibranchiata--Pacific Coast (North America)--Identification.