TY  - BOOK
ED  - India. National Sample Survey Office
TI  - NSS 21st round :July 1966- June 1967
U1  - 311.2 21st
PY  - 1975///
CY  - Delhi
PB  - NSSO
KW  - Sampling (Statistics); Population; Birth control; Mortality-Statistics
N1  - Contents: no. 210- Birth and death rate by recall period
ER  -