Paul A. Samuelson extends the Ricardian theory of foreign trade to a model of small open economies in which countries can trade semi-finished capital goods on international markets, as well as trade in produced consumer goods. He argues that this extension provides an additional gain from trade,...

Samuelson extends the Ricardian theory of foreign trade to a model of small open economies in which countries can trade semi-finished capital goods on international markets, as well as produced consumer goods. He argues that this extension provides an additional gain from trade, which he labels...