Ummerkutty, A N P <br/><br/>
India Samudram 

 - Thiruvananthapuram  State Institute of Languages 
 - 254p. 
<br/><br/><label>Subjects--Uniform Titles: </label>--general stack
<br/><br/><label>Subjects--Topical Terms: </label><br/>Natural sciences & mathematics--Geology, hydrology & meteorologyGeneralia
<br/><br/><label>Dewey Class. No.: </label>551.467  / UMM-I