Contrary to Asian countries, the agricultural sector in Africa had not benefited from the green revolution success …. After a long time of disinterest in the agriculture sector in Africa, several voices arise now in favour of greater efforts … the huge need of increasing the productivity in this sector. If increase in agriculture productivity requires both an …

agglomeration force. Firm heterogeneity causes a perfect spatial sorting, in which a large country attracts only high productivity …

industry magnifies the productivity advantage of multinationals by restricting backward and forward linkages to groups of firms …

evolution of within firm productivity. The main contribution is to incorporate endogenous labor productivity gains … introduce two novel results. First, aggregate productivity increases due to within-firm productivity improvements. Second …

We study the impact of trade on productivity using Chilean plant-level data (1982-1999). Our contribution is to …. Finally, we test the impact of trade barriers by regressing productivity on border effect estimates. A fall in export barriers … improves productivity in traded sectors, while the reduction of import barriers might foster productivity in export industries …