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U"F$"/765>ί5 Haberler, Gottfried (1936), The Theory of International Trade, William Hodge, London. Jones, Ronald W. (1971), A Three-Factor Model in Theory, Trade and History, Ch. 1 in Jagdish Bhagwati, Ronald Jones, Robert Mundell and Jaroslav Vanek, (eds.), Trade, Balance of Payments and Growth, North-Holland, Amsterdam. Samuelson Paul (1971), Ohlin Was Right, Swedish Journal of Economics, 73, pp. 365-384. Viner, Jacob (1931), Cost Curves and Supply Curves, Zeitschrift fur Nationalokonomie, 3, pp. 23-46. 24