The dynamic consequences of machine threshing in the Semi-Arid Tropics (SAT) of Peninsular India are evaluated. Limited diffusion of threshers in the SAT of the country. Cost savings and profitability of mechanical threshing. The marked decrease in labour hiring for threshing between 1975/76 and...

This paper uses firm-level panel data for the manufacturing sector in four African countries to estimate the effect of exporting on efficiency. Estimating simultaneously a production function and an export regression that control for unobserved firm effects, it finds both significant efficiency...