Bhatnagar R P <br/><br/>
Vyavhar-vigyano main anusandhan ke paryogtham aakalap 

 - Meerut, India  Loyal Book Depot   1993 
 - 199p. 
<br/><br/><label>Source: </label>Textual 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Experimental Method