Search Results : EPA National Library Catalog

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Select Item Title Year Published
  1 Application of the Ecotone Concept in Defining Nutrient Management Requirements for the Upper Potomac River Basin. 1993
  2 Watershed Nitrogen and Phosphorus Balance: The Upper Potomac River Basin. 1992
  3 Toxicity of chlorine and ammonia to aquatic life: Chemistry, water quality criteria, recent research, and recommended future research. {microform} 1991
  4 Retrospective Study of the Water Quality Issues of the Upper Potomac Estuary. 1990
  5 Uncertainties in Nitrogen Mass Loadings in Coastal Watersheds. 1990
  6 Watershed Nitrogen Management: Upper Potomac River Basin Case Study. 1990
  7 Biological Treatment of Toxics in Wastewater: The Problems and Opportunities. 1987
  8 Biological Treatment of Toxics in Wastewater: The Problems and Opportunities. 1986
  9 Status Report on the U.S. National Dioxin Study. 1986
  10 Bioassays of Effluents from Stationary Sources: An Overview. 1982

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