For those of you who asked, the citation for Peter Stonehouse' paper is: Stonehouse, D.P. et al., 1996. A case study approach to comparing weed management strategies under alternative farming systems in Ontario. Can. J. Agric. Econ. 44:81-99. ACLARK@crop.uoguelph.ca Dr. E. Ann Clark Associate Professor Crop Science University of Guelph Guelph, ON N1G 2W1 Phone: 519-824-4120 Ext. 2508 FAX: 519 763-8933