Census of India, 1991 <br/><br/>
Migration tables. Sikkim. V 22, Pt. VA & VB-D series 

 - Sikkim  Govt. Press           1991 
 - vii, 863p  cm. 
<br/><br/><label>Source: </label> General Book 
<br/><br/><label>Dewey Class. No.: </label>Y:5.2973sN91, N9.22