First Annual Conference on Agricultural Policy and the Environment; Proceedings of a Conference Sponsored by University of Minnesota, Center for International Food and Agricultural Policy; Agricultural Development Regional Agency (ESAV); University of Padova, Motta di Livenza, Italy, June 19-23, 1989, Volume IV Table of Contents: Land Use and Incentive Schemes for Nonpoint Pollution Control, by Ted Graham-Tomasi and Arthur Wiese Land Use and Environmental Quality: A Case Study, by Giuseppe Stellin Groundwater Pollution and Minnesota's Agriculture, by Bill Easter and John Waelti Modelling Pesticide and Herbicide Health Impacts: Is an Agricultural "Superfund" Coming?, by C. Ford Runge and Gary Krieger