Memoirs of Ruchi Ram Sahni : pioneer of science popularisation in Punjab 

 - 2nd Edit. 
 - New Delhi:  Vigyan Prasar,  1997. 
 - xxxv; 264p. 
<br/><br/><label>ISBN: </label>817480000X 
<br/><br/><label>Dewey Class. No.: </label>509.2