Mehra, Naveen <br/><br/>
Vigyan-shikshan kee naee vidhiyan  : samanyan vigyaan-shikshan padarth (Hindi) 

 - Delhi  : Janavanee Prakashan,  1999 
 - 101p. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Substance
<br/><br/><label>Dewey Class. No.: </label>375.5 MN:S