Saravanavel, P. <br/><br/>
Research methodology   

 - Revised and enlarged 
 - Allahabad  Kitab Mahal  2005 
 - x, 486 p. 
 -   .
<br/><br/><label>ISBN: </label>
<br/><br/><label>Dewey Class. No.: </label>370.78  / Sa717