TY - BOOK AU - Kohli, Ulrich TI - Technology, duality, and foreign trade: The GNP function app T2 - Studies in international trade policy SN - 0-472-10253-2 U1 - 382/KOH PY - 1991/// CY - Ann Arbor PB - Uni of Michigan Pr KW - Production functions(Economic theory) KW - Duality theory(Mathematics) KW - Gross national product--Mathematical models KW - Exports--Mathematical models KW - International trade--Mathematical models KW - Commerce ER -