The Science of The Total Environment · 2003 · 153 citations · 28 references
AgricultureEnvironmental SciencesNutrient CyclingNutrient ManagementPhotosynthesisAquatic Nutrient CyclingNitrogen CyclePhosphorus CyclePhosphorus CyclingPhosphorus NutritionWater QualityDissolved Organic PhosphorusLake EutrophicationNitrogen To Phosphorus RatiosNitrogen:phosphorus RatioPhosphorus Pollution
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Water-Quality Trends in the Nation's Rivers
Richard A. Smith, Richard B. Alexander, M. Gordon Wolman · Science · 1987 · 478 citations