TY  - BOOK
AU  -  Bourgeois- Pichat Jean
TI  - Main trends in demography
SN  - 0043010601
U1  - 301.32 
PY  - 1973///
CY  - London
PB  - George Allen and Unwin Ltd.
KW  - Demography
KW  - Population
N1  -  This essay was originally published as Chapter 5 in Main Trends of Research in the Social and Human sciences, part 1, Mouton/ Unesco 1970
N2  -  Population, Demography
ER  -