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by -- Australian Water and Wastewater Association; International Association on Water Pollution Research and Control; International Conference on Water Quality & Management for Recreation & Tourism (1988 : Brisbane)
by -- North Atlantic Treaty Organization Committee on the Challenges of Modern Society. Pilot Project on Inland Water Pollution.
by DeCoursey, Donn G. -- United States Dept. of Agriculture; United States Agricultural Research Service -- International Symposium on Water Quality Modeling of Agricultural Non-Point Sources (1988 : Logan, Utah).
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