1. Agricultural Watershed Studies in the Canadian Great Lakes Drainage Basin;Coote,1978
2. Atrazine Carryover in Production of Sugar Beets in Southwestern Ontario
3. Land Use Activities in Eleven Agricultural Watersheds in Southern Ontario, Canada, 1975–76;Frank,1977
4. The adsorption of some organic compounds, especially herbicides, on clay minerals;Frissel;Versl. Landbouwkd. Onderz. E,1961