How often are propositions on the effects of customs unions theoretical curiosa and when should they guide policy?

How often are propositions on the effects of customs unions theoretical curiosa and when should they guide policy?

Bibliographic Details
Main Author: Abrego, Lisandro
Other Authors: Reizman, Raymond, Whalley, John
Format: Book
Language:English
Published: Cambridge National Bureau of Economic Research 2001.
Series:NBER working paper series no.8304
Subjects:
Customs unions > Economic models.
Trade blocs > Econometric models.