Dr: Vellayani Arjun Ph D,  <br/><br/>
Gavekshana Megala 

 - Kottayam  NATIONAL BOOKSTALL  1900 
<br/><br/><label>Subjects--Uniform Titles: </label>--General Stack
<br/><br/><label>Subjects--Topical Terms: </label><br/>Education, research & related topics--TechnologyGeneralia
<br/><br/><label>Dewey Class. No.: </label>607  / VEL-G