Chellappan Nair, N P <br/><br/>
Vilakkapetta Khani 

 - Kottayam  SAHITHYA PRVARTHAKA SANGHAM  1978 
<br/><br/><label>Subjects--Uniform Titles: </label>--GENERAL STACK
<br/><br/><label>Subjects--Topical Terms: </label><br/>NATURAL SCIENCE& MATHEMATICS--EARTH SCIENCEGeneralia
<br/><br/><label>Dewey Class. No.: </label>550.81  / CHE-V