Koul,Lokesh <br/><br/>
Methodology of Educational Research 
Lokesh koul 
 - 3rd Revised and Enlarged Edition 
 - New Delhi  Vikas Publishing  2007 
 - 543p. 
<br/><br/> P.B 
<br/><br/><label>ISBN: </label>0006988523 
<br/><br/><label>Dewey Class. No.: </label>370.72 KOU