Bharat gyankosh 

 - New delhi  Encyclopaedia britannica (INdia) private limited  2002 
 - 515p. 
<br/><br/><label>ISBN: </label>vol 1 aa se ka (angad, guru se kshitigarabh) 
<br/><br/><label>Dewey Class. No.: </label>030.954  Ra14B