Census of India 1981 <br/><br/>
Sikkim: census atlas 

 - Delhi  The Controller of Publications  1988 
 - 132+p. 
 - Census of India 1981. Series-19, Sikkim. Part-XII .
<br/><br/><label>Dewey Class. No.: </label>A81x54 In2/81/19/PT12