census of India,1961 <br/><br/>
Household economic tables .West Bengal and Sikkim V 16, Pt. 3 

 - West Bebgal & Sikkim   Bebgal & Sikkim Govt. Press       
<br/><br/><label>Source: </label> General Book 
<br/><br/><label>Dewey Class. No.: </label>Y:5.275sN61, K1.16-3