TY  - BOOK
AU  - Polgar,Steven
TI  - Population, ecology and social evolution
SN  - 9027975299
U1  -  301.32 
PY  - 1975///
CY  - The Hague
PB  - Mouton Publishers
KW  - Social evolutiones
KW  - Populationes
KW  - Human ecologyes
ER  -