"Census of India, 1991" <br/><br/>
Economic tables  " Pt. IIIB- B series, Table B-9 (F), B-12 (F), B-13 (I) (F), B-13 (II) (F), B-14 (F) " 

 - Andhra  Pradesh Govt. Press       1991 
 - "VII, 1015p"  cm. 
<br/><br/><label>Standard No.: </label>162694 
<br/><br/><label>Source: </label> Reference Collections 
<br/><br/><label>Dewey Class. No.: </label>"Y:5.216sN91, N7.2"