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  1. 1
    Probable maximum precipitation Susquehanna River drainage above Harrisburg, Pa. /
    Udgivet 1965

    Government Document Bog
  2. 2
    Mineral resources of Johnstown, Pennsylvania and vicinity /

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    Government Document Bog
  3. 3
    Results of spirit leveling in Pennsylvania, 1899 to 1911, inclusive

    Government Document Bog
  4. 4
    Oil and gas fields of the Carnegie quadrangle, Pennsylvania /

    Government Document Bog
  5. 5
    Stream quality in Appalachia as related to coal-mine drainage, 1965 /

    Government Document Bog
  6. 6
    Stratigraphic studies of the Silurian rocks of Pennsylvania : Part 2 : Subsurface maps of the Silurian Rocks of western Pennsylvania and adjacent areas /
    af Cate, Addison S
    Udgivet 1965

    Government Document Bog
  7. 7
    Oil and gas developments in Pennsylvania in 1985 /
    af Harper, John A
    Udgivet 1986

    Government Document Bog
  8. 8
    Hourly precipitation data
    Udgivet 1951

    Government Document Tidsskrift
  9. 9
    Climatological data

    Government Document Tidsskrift
  10. 10
    Geology of the New Tripoli quadrangle, Lehigh, Berks, Schuylkill, and Carbon counties, Pennsylvania /
    af Epstein, Jack Burton, 1935-
    Udgivet 1993

    Government Document Bog
  11. 11
    Environmental geology, Allegheny County and vicinity, Pennsylvania : description of a program and its results /

    Government Document Bog
  12. 12
    Geology of the Frenchtown quadrangle, New Jersey--Pennsylvania /
    af Drake, Avery Ala, 1927-
    Udgivet 1961

    Government Document Kort
  13. 13
    Geology of the Washington west quadrangle, Pennsylvania /

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  14. 14
    Johnstown-western Pennsylvania storm and floods of July 19-20, 1977 /
    Udgivet 1982

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  15. 15
    Storm-induced slope movements at East Brady, northwestern Pennsylvania : description of the August 1980 debris avalanching and other slope movements and a discussion of the factors involved /
    af Pomeroy, John S., 1929-
    Udgivet 1984

    Government Document Bog
  16. 16
    Shorter contributions to paleontology and stratigraphy /
    Udgivet 1991

    Government Document Bog
  17. 17
    Life history and notes on the biology of Stelidota octomaculata (Coleoptera : Nitidulidae) /
    af Galford, Jimmy R
    Udgivet 1991

    Government Document Bog
  18. 18
    White clays of Pennsylvania : geology and geologic setting of white clays /

    Government Document Bog
  19. 19
    Geology of the Dunkard Group (Upper Pennsylvanian-Lower Permian) in Ohio, West Virginia, and Pennsylvania /

    Government Document Bog
  20. 20
    Earthquake hazard in Pennsylvania /

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