TY  - BOOK
AU  - Andersson A E Ed.
AU  -  Holmberg I Ed.
TI  - Demographic economic and social interaction
U1  - Y:5:(B), L7 
PY  - 1977///
CY  - Cambridge
PB  - Bullinger Publishing        
KW  -  Population-Economic structure
KW  - Demography
ER  -