SPATIAL ARRANGEMENTS OF EXTERNALITY GENERATING AND RECEIVING ACTIVITIES
研究农业中因相邻土地使用不兼容导致的外部性（如农药漂移、交叉授粉），分析自由市场激励能否实现高效的活动空间安排，并描述高效安排的特征。
Many cases of externalities in agricultural production such as pesticide drift, cross-pollination, and offensive odors are attributable to the incompatibility of neighboring land uses. This paper offers an examination of when an efficient activity arrangement is compatible with free-market incentives. Also, free-market and socially efficient activity arrangements are characterized in terms of spatial concentration of the externality generating uses.