L. P. Agarwal,  L. P <br/><br/>
Modern educational research / 
L. P. Agarwal 
 - New Delhi :  Dominant Publishers & Distributors,   2008 
 - 310 p. : 
<br/><br/><label>ISBN: </label>8178883368 
<br/><br/><label>Dewey Class. No.: </label>370.72 AGA