Osburn, Raymond C. <br/><br/>
Bryozoa of the Pacific coast of America :  Part 3, Cyclostomata, Ctenostomata, Entoprocta, and addenda / 
Raymond C. Osburn. 
 - Los Angeles, California :  The University of Southern California Press,  1953. 
 - 613-841 p. ;  il. ;  23 cm. 
 - Allan Hancock Pacific Expeditions   vol. 14, no. 3 .
<br/><br/>Incluye referencias bibliográficas e índice. 
<br/><br/> 2nd shelf  BIB Now: 5364 
<br/><br/><br/>English 
<br/><br/><label>ISBN: </label> Restringida 
<br/><br/><label>Dewey Class. No.: </label>594.67