Distinguishing Feature of inter-regonal and international trade, International trade equilibroium: Some analytical tools, The classical theory of comparative advantage, The classical theory of comparative costs and UDCS, refinements of the comparative costs theory, Haberler's theory of opportunity costs, Mill's theory of reciprocal demand, the modern theory of factor endowments: The heckscher-ohlin theory, International trade and factor prices, Factor intensity reversals: stopler-samuelson and rybczynski theorems, Empirical testing of comparative costs and H.O. Theories, Extension of H.O. theory: dynamic factors in international trade, Some new theories of international trade, Economic growth and international trade, Technical progress and international trade, The gains from trade,, The terms of trade, terms of trade and economics development: secular deterioration hypothesis, free trade versus protection, tariffs, the political economy of protection, effective rate of production, Non-tariff barriers (NTBs), Import quotas, dumping, exchange contyrol, Balance of payment, international economic relations,