TY  - BOOK
AU  - Nigam, R C 
TI  - Language handbook on mother tongues in census:  : Census of India 1971 
T2  - Census centenary monograph 
PY  - 1971///
CY  - New Delhi: 
PB  - Office of the registrar general, India Ministry of Home Affairs, 
KW  - Language classification
KW  - Principal language
ER  -