Sachitra gyan-vigyan kosh 
edited by M. Jouhari 
 - New Delhi  Vigyan Bharati  1989 
 - 128p.; ill. : 22cm. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Science--Dictionaries
<br/><br/><label>Dewey Class. No.: </label>H  / 503 SAC