Search results for: Shultz, David J.

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  1. 1

    Nitrogen dynamics in the tidal freshwater Potomac River, Maryland and Virginia, water years 1979-81

    Authors: Shultz, David J.
    Published: Department of the Interior, U.S. Geological Survey ; For sale by the Books and Open-File Reports Section, 1989
    Physical Description: vii, 41 pages : illustrations, maps ; 28 cm.
    Government Document Book
  2. 2

    Rapid and precise determination of ATP using a modified photometer

    Authors: Shultz, David J.
    Published: U.S. Geological Survey, 1980
    Physical Description: 1 volume : illustrations ; 28 cm.
    Government Document Microfilm Book