Evolutionary economists have tended to assess firms and industries separately, neglecting the role of their interaction … in the process of economic growth and development. We trace the separation of firms and industries to Marshall, whose … industries. Penrose avoids the industry concept by focussing on heterogeneous firms, while Young and Steindl develop mundane …

Many industries are geographically concentrated. Many mechanisms that could account for such agglomeration have been … proposed. We note that these theories make different predictions about which pairs of industries should be coagglomerated. We … 1997 to compute pairwise coagglomeration measurements for U.S. manufacturing industries. Industry attributes are used to …