TY  - BOOK
ED  - United Nations. Department of Economic and Social Affairs.
TI  - Towards a system of social and demographic statistics
PY  - 1975///
CY  - New York : 
PB  - United Nations, 
KW  - Demography
KW  - Methodology
KW  - Social indicators
KW  - Time management surveys
N1  -  "United Nations publication : Sales no. E.74.XVII.8.";  Bibliography: p. 181-187
ER  -