Search Results : EPA National Library Catalog

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Select Item Title Year Published
  1 Concentrations of selected pharmaceuticals and antibiotics in south-central Pennsylvania waters, March through September 2006 {electronic resource} / 2007
  2 Water-quality assessment of the Lower Susquehanna River Basin, Pennsylvania and Maryland : sources, characteristics, analysis and limitations of nutrient and suspended-sediment data, 1975-90 / 1997
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