Search Results - Covert, S. Alex

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  1. 1

    Ohio aquatic gap analysis--an assessment of the biodiversity and conservation status of native aquatic animal species by Covert, S. Alex

    Published: U.S. Geological Survey, 2007
    Description: 1 electronic text (ix, 509 pages) : HTML, digital, PDF file.
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    Ohio aquatic gap analysis--an assessment of the biodiversity and conservation status of native aquatic animal species
  2. 2

    Comparison of U.S. Geological Survey and Ohio Environmental Protection Agency fish-collection methods using the index of biotic integrity and modified index of well-being, 1996-97 by Covert, S. Alex

    Published: U.S. Dept. of the Interior, U.S. Geological Survey, 2000
    Description: vi, 17 pages : digital, PDF file.
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    Comparison of U.S. Geological Survey and Ohio Environmental Protection Agency fish-collection methods using the index of biotic integrity and modified index of well-being, 1996-97
  3. 3

    Comparison of U.S. Geological Survey and Ohio Environmental Protection Agency fish-collection methods using the index of biotic integrity and modified index of well-being, 1996-97 by Covert, S. Alex

    Published: U.S. Dept. of the Interior, U.S. Geological Survey ; Branch of Information Services [distributor], 2001
    Description: vi, 18 pages : illustrations, map ; 28 cm.
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    Comparison of U.S. Geological Survey and Ohio Environmental Protection Agency fish-collection methods using the index of biotic integrity and modified index of well-being, 1996-97
  4. 4

    Water quality of the Mahoning River and selected tributaries in Youngstown, Ohio by Stoeckel, Donald M.

    Published: U.S. Dept. of the Interior, U.S. Geological Survey ; Branch of Information Services [distributor], 2002
    Description: v, 45 pages : illustrations, maps ; 28 cm.
    Other Authors: “…Covert, S. Alex…”
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    Water quality of the Mahoning River and selected tributaries in Youngstown, Ohio
  5. 5

    Water quality of the Mahoning River and selected tributaries in Youngstown, Ohio by Stoeckel, Donald M.

    Published: U.S. Dept. of the Interior, U.S. Geological Survey, 2002
    Description: v, 45 pages : digital, PDF file.
    Other Authors: “…Covert, S. Alex…”
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    Water quality of the Mahoning River and selected tributaries in Youngstown, Ohio

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