Search Results : EPA National Library Catalog

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  1 Design of the national water-quality assessment program : occurrence and distribution of water-quality conditions / 1995
  2 Design of the national water-quality assessment program occurrence and distribution of water-quality conditions / {electronic resource} : 1995
  3 Biology as an integrated component of the U.S. Geological Survey's National Water-Quality Assessment Program 1994
  4 Report of the Interagency Biological Methods Workshop 1994
  5 Guidelines for the processing and quality assurance of benthic invertebrate samples collected as part of the National Water-Quality Assessment Program 1993
  6 Methods for collecting benthic invertebrate samples as part of the National Water-Quality Assessment Program 1993
  7 Methods for sampling fish communities as part of the National Water-Quality Assessment Program / 1993
  8 Biological assessments in large rivers / 1992

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