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  1. 21
    Declaring Frankford Creek, Pa., to be a nonnavigable stream.
    Published 1940
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  2. 22
    Declaring portions of the Delaware River to be nonnavigable : hearing before the Committee on Environment and Public Works, United States Senate, One Hundredth Congress, second session, July 29, 1988.
    Published 1988
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  3. 23
    Drainage basins, channels, and flow characteristics of selected streams in central Pennsylvania /
    by Brush, Lucien M.
    Published 1961
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  4. 24
    Hydrologic characteristics and water quality of headwater streams and wetlands at the Allegheny Portage Railroad National Historic Site, Summit Area, Blair and Cambria Counties, Pennsylvania, 2014-16 /
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  5. 25
    Estimation of flood-frequency characteristics and the effects of urbanization for streams in the Philadelphia, Pennsylvania area /
    by Bailey, James F.
    Published 1989
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  6. 26
    Water-quality study of Tulpehocken Creek, Berks County, Pennsylvania, prior to Impoundment of Blue Marsh Lake /
    by Barker, James L., 1936-
    Published 1977
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  7. 27
    Temporal changes in sulfate, chloride, and sodium concentrations in four eastern Pennsylvania streams /
    by Barker, James L., 1936-
    Published 1986
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  8. 28
    Preimpoundment water quality of Raystown Branch Juniata River and six tributary streams, south-central Pennsylvania /
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  9. 29
    Calibration of a two-dimensional hydrodynamic model for parts of the Allegheny, Monongahela, and Ohio Rivers, Allegheny County, Pennsylvania /
    by Fulton, John W., Wagner, C. Russell
    Published 2014
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