Ch. 1. welfare gains from trade -- Ch. 2. Trade and growth : the empirical evidence -- Ch. 3. International trade and factor accumulation -- Ch. 4. Overcoming diminishing returns : technology as an externality -- Ch. 5. Technological progress as creative destruction -- Ch. 6. International trade and technological progress -- Ch. 7. Multi-sector models and international trade -- Ch. 8. Trade and technology transfers -- Ch. 9. Restating the case for free trade.