Shrivastava, Bhagwati Prasad <br/><br/>
Avishkar katha (HIN) 

 - New Delhi  Peoples Publishing House  1959 
 - 72p. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Applied Sciences/Technology
<br/><br/><label>Dewey Class. No.: </label>608 SHR