This paper studies the role of bundling in the efficient provision of excludable public goods. We show that bundling in the provision of unrelated public goods can enhance social welfare. With a large number of goods and agents, first best can be approximated with pure bundling. For a parametric...

We develop a general equilibrium model of trade with endogenous human capital acquisition in job specific skills and imperfectly observable skills. We show that even if there are no ex-ante fundamental differences between countries there may be equilibria under international trade with...