Tiltle: Changing agricultural comparative advantage

Author: Philip C. Abbott and Robert L. Thompson

Journal: Agricultural Economics
Volume 1, Issue 2, June 1987, Pages 97-112

URL: http://www.sciencedirect.com/science/article/B6T3V-45RXBXH-1/2/2ef9eddc9e82e5a7f89ff4df43e495b1


感激不尽！