Census of India,1971 <br/><br/>
Social and cultural tables. Bihar V. 4, Pt. 2C2 (C-1 to C-VI and fertility tables) 

 - Bihar  Govt Press           1971 
<br/><br/><label>Source: </label> General Book 
<br/><br/><label>Dewey Class. No.: </label>Y:5.273sN71, L1.4-2C(2)