TY  - BOOK
AU  - Spiegelman, Mortimer
TI  - Introduction to demography
SN  - 8170541808
CY  - Cambridge
KW  - Census statistics
KW  - Demography
KW  - Family formation
KW  - Fertility
KW  - Health statistics
KW  - Mortality
KW  - Population
KW  - Population geography
KW  - Socio-economic status
KW  - Working population
ER  -