Gupta Arvind <br/><br/>
Khilonon ka khajana: Vigyan ke kuchh saste saral aur rochak khilone 
Eklavya 
 - Bhopal, India  Eklavya Prakashan  1993 
 - 34p. 
<br/><br/><label>ISBN: </label>978-81-8717-37-9 
<br/><br/><label>Source: </label>Reference