Herdt, Robert W. - In: Handbook of agricultural economics : volume 4, (pp. 3253-3304). 2010
development, irrigation, research, extension, and higher education. However, except for the World Bank's Operations Evaluation … farmers or national economies. It is impossible to conclude, from the evaluation literature, whether agricultural aid … makers to place too much credence in the results of impact evaluation studies because there are few consistent results …