Alston, Julian M., and Philip G. Pardey. 2014. "Agriculture in the Global Economy." Journal of Economic Perspectives, 28(1): 121-46.

Wright, Brian. 2014. "Global Biofuels: Key to the Puzzle of Grain Market Behavior." Journal of Economic Perspectives, 28(1): 73-98.

Sumner, Daniel A. 2014. "American Farms Keep Growing: Size, Productivity, and Policy." Journal of Economic Perspectives, 28(1): 147-66.

请能够下载的朋友帮忙下载以上三篇论文。谢谢。