Roper, Clyde F. E., 1937- <br/><br/>
Vertical distribution of pelagic Cephalopods 
Clyde F. E. Roper and Richard E. Young 
 - Washington  Smithsonian Institution Press  1975 
 - iv, 51 p. : ill. ; 26 cm. 
 - Smithsonian contributions to zoology ; no.209. .
<br/><br/> Includes index. 
<br/><br/>Bibliography: p. 45-48. 
<br/><br/><label>LCCN: </label>75-6936 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Cephalopoda--North Pacific Ocean<br/>Cephalopoda--Bermuda Islands