"Sethi, Nihalkaran" <br/><br/>
Chumbaktwa aur vidhut 

 - Allahabad  Hindustani Academy  1960 
 - 749p. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Physics
<br/><br/><label>Dewey Class. No.: </label>GL H 538