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3. IJC. 1987b. Report on Great Lakes water quality. Great Lakes Water Quality Board, Windsor, Ontario, Canada.
4. State of Michigan. 1986. World conference on large lakes: conference synopsis. Mackinac Island, Michigan, United States.
5. Thomas, R. L., and J. H. Hartig. 1987. The Great Lakes. In press, Freshwater quality—a global assessment, World Health Organization, Geneva, Switzerland.