Necessarily Welfare-Enhancing Customs Unions with Industrialization constraints: A proof of the Cooper-Massell-Johnson-Bhagwati Conjecture Krishna Pravin author Columbia University. Economics Bhagwati Jagdish N. author Columbia University. Economics Columbia University. Political Science Columbia University. Economics contributor originator text Working papers New York Department of Economics, Columbia University 1994 Economics Department of Economics Discussion Papers 694 http://hdl.handle.net/10022/AC:P:15586 English NNC NNC 2011-02-28 10:12:13 -0500 2011-06-27 07:33:33 -0400 2803 eng