TY  - BOOK
AU  - Freeman,Donald B.
TI  - International trade, migration, and capital flows: a quantitative analysis of spatial economic interaction 
T2  - Research paper (University of Chicago. Dept. of Geography)
PY  - 1973///
CY  - Dept. of Geography, Chicago, Ill.
PB  - University of Chicago
KW  - International economic relations
KW  - Mathematical models
KW  - International trade
N1  - Bibliography : p. 189-201
ER  -