TY  - BOOK
AU  - Balassa, Bela
TI  - The theory of economic integration
U1  - 338.91 
PY  - 1961///
CY  - Homewood, Ill.
PB  - Richard D. Irwin
KW  - International economic integration
N1  - Includes bibliographical references ( p. 274-289)
ER  -