TY  - BOOK
AU  - Balassa,Bela A.
TI  - The theory of economic integration
T2  - Unwin university books
SN  - 0043302351
U1  - 338.91 
PY  - 1961///[Impression 1962&1965]
CY  - London
PB  - Allen and Unwin
KW  - International economic integration
N1  - Includes index; Bibliography: p. 274-289
ER  -