Perry, Richard,  1909- <br/><br/>
The unknown ocean / 
Richard Perry ; illustrated Nancy Lou Gahan 
 - Newton Abbot :  David & Charles,  1972 
 - 288 p. :  ill. ;  22 cm. 
 - Perry, Richard, 1909- Many worlds of wildlife series ; vv.1. .
<br/><br/>Bibliography: p. 268-274. 
<br/><br/><label>ISBN: </label>0715352318 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Marine fauna<br/>Marine ecology