Ummerkutty, A. N. P. <br/><br/>
Kaṭaline kaṇṭettal. 

 -  [1966] 
 - 286 p.  ill.  18 cm. 
<br/><br/> In Malayalam. 
<br/><br/><label>LCCN: </label>sa 67005119  
<br/><br/><label>Subjects--Topical Terms: </label><br/>Oceanography--Popular works.
<br/><br/><label>LC Class. No.: </label>GC21  / .U4