How High Are Rates of Return to Fertilizer? Evidence from Field Experiments in Kenya
利用肯尼亚的田间实验数据，估算化肥投资的回报率，为农业政策制定者和农民提供参考。
How High Are Rates of Return to Fertilizer? Evidence from Field Experiments in Kenya by Esther Duflo, Michael Kremer and Jonathan Robinson. Published in volume 98, issue 2, pages 482-88 of American Economic Review, May 2008