Singh, Virender  <br/><br/>
Vigyan aur navpravartan / 
Virender Singh 
 - Delhi :  Banyan tree publisher,  2021. 
 - 184 p. :  ill. ;  22 cm. 
<br/><br/><label>ISBN: </label>9789383442416 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Science and technology<br/>Science and future
<br/><br/><label>Dewey Class. No.: </label>500  / SIN/V