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2. Elder, F. C.: 1975, ?International Joint Commission Program for Atmospheric Loading of the Upper Great Lakes?. Paper presented at Second Interagency Committee on Marine Science and Engineering Conference on the Great Lakes, Argonne, Ill.
3. International Joint Commission Report: 1977, ?The Waters of Lake Huron and Lake Superior. Volume II, [Part A]. Lake Huron, Georgian Bay and the North Channel.?
4. Menzel, D. W. and Corwin, N.: 1965, Limnol. Oceanogr. 10, 280.
5. Miller, W. E., Maloney, T. E., and Greent, J. C.: 1974, Water Res. 8, 667.