Large firms played a central role in the “new trade” models that became a major focus of trade economists in the early 1980s. Subsequent literature for the most part kept imperfect competition but jettisoned oligopoly. Instead, as the heterogeneous firms literature burgeoned in the 2000s,...

This paper develops a two-good, two-country model with national open access renewable resources. We derive an appropriate analog of `factor proportions' for the renewable resource case and link it to trade patterns and to the likelihood of diversified production. The resource importer gains from...