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

 - Thiruvananthapuram  State Institute of Languages  1973 
 - 254p. 
<br/><br/><label>Subjects--Uniform Titles: </label>--general stack
<br/><br/><label>Subjects--Topical Terms: </label><br/>science--geology,hydrology and meteorologyGeneralia--natural science and mathematics
<br/><br/><label>Dewey Class. No.: </label>551.467  / UMM-I