TY  - BOOK
AU  - El-Agraa,A.M.
TI  - The theory of international trade
SN  - 0709909179
PY  - 1983///
CY  - London
PB  - Croom Helm
KW  - International economic relations
KW  - Mathematical models
KW  - Commerce
N1  - Bibliography : p.170-181
ER  -