Mathew, K.M <br/><br/>
Akasathinumappurathekku / 
by K.M. Mathew 
 - Kottayam:  Vidhyarthimithram Press,  1971 
 - p.72 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Science
<br/><br/><label>Dewey Class. No.: </label>500  / MAT-A