Census of India,1961 <br/><br/>
General economic tables .Nagaland V 23, Pt.2B. 

 - Nagaland  Govt. Press           1961 
<br/><br/><label>Source: </label> General Book 
<br/><br/><label>Dewey Class. No.: </label>Y:5.277NsN61, K1.23-2B