This paper revisits a classical inquiry by addressing the question of localization and urbanization economies. We propose that specialization and diversity may offer externalities operating at different spatial scales. Using high-resolution geo-coded plant-level panel data for Swedish cities...

Consisting of teams working with firm level data, the International Study Group on Exports and Productivity has used comparable micro level panel data for 14 countries and a set of identically specified empirical models to investigate the relationship between exports and productivity. The...