1. Introduction -- 2. Why do countries trade with each other -- 3. A general equilibrium model of international trade -- 4. A partial equilibrium model of international trade -- 5. The core propositions of neoclassical trade theory -- 6. Empirical tests of simple trade theories -- 7. Technology based trade theories -- 8. Economies of scale, imperfect competition, and intra-industry trade -- 9. Intermission -- 10. Economic effects of a tariff -- 11. Nontariff barriers to trade -- 12. Arguments used in support of trade barriers -- 13. Measuring the effects of trade barriers -- 14. The political economy of trade barriers -- 15. Discriminatory trade policies -- 16. International trade and economic development -- 17 International factor movements, trade in services, and the balance of payments -- 18. Trade policy when the balance of payments is in disequilibrium -- 19. Exchange rate movements and international trade --