O.R.Krishnaswami , M.Ranganatham, P.N.Harikumar <br/><br/>
Research methadology 

 - Hyderabad  Himalaya  2020 
 - 460 
<br/><br/><label>ISBN: </label>9789352623310 
<br/><br/><label>Dewey Class. No.: </label>001.42 KRI