Census of India 1981 <br/><br/>
Sikkim: migration tables 

 - Delhi  The Controller of Publications  1985 
 - 373+p. 
 - Census of India 1981. Series-19, Sikkim. Part V-A & B .
<br/><br/><label>Dewey Class. No.: </label>A81x54 In2/81/19/Pt 5 A & B