TY  - BOOK
AU  - Porter , A E
TI  - Census of India, 1931, 5: Bengal and Sikkim
U1  - 312.954 
PY  - 1987///, 1933
CY  - New Delhi
PB  -  Usha, 
KW  - Sikkim (India) -- Census, 1931
KW  - Bengal (India) -- Census, 1931
KW  - India -- Census, 1931
ER  -