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  1. Copper Ores in Pennsylvania

    Resource Type: Book
    Creator: Corbin, J. Ross
    Keyword: PAGS Progress Reports
    Publisher: Pennsylvania Bureau of Topographic and Geologic Survey
    Object Type: GenericWork
    Date Uploaded: 2014-09-25T00:38:54Z
  2. Lead and Zinc Ores near Phoenixville, Chester County, Pennsylvania

    Resource Type: Book
    Creator: Miller, Benjamin LeRoy
    Keyword: PAGS Progress Reports
    Publisher: Pennsylvania Bureau of Topographic and Geologic Survey
    Object Type: GenericWork
    Date Uploaded: 2014-09-25T00:38:53Z
  3. Lead and Zinc Ores in Lancaster County, Pennsylvania

    Resource Type: Book
    Creator: Miller, Bejamin LeRoy
    Keyword: PAGS Progress Reports
    Publisher: Pennsylvania Bureau of Topographic and Geologic Survey
    Object Type: GenericWork
    Date Uploaded: 2014-09-25T00:38:53Z
  4. Coal Beds in Southern Somerset County, Pennsylvania

    Resource Type: Book
    Creator: Sisler, J.D.
    Keyword: PAGS Progress Reports
    Publisher: Pennsylvania Bureau of Topographic and Geologic Survey
    Object Type: GenericWork
    Date Uploaded: 2014-09-25T00:38:52Z
  5. Rocks of the McCalls Ferry Quadrangle, Penna.

    Resource Type: Book
    Creator: Jonas, Anna I.
    Keyword: PAGS Progress Reports
    Publisher: Pennsylvania Bureau of Topographic and Geologic Survey
    Object Type: GenericWork
    Date Uploaded: 2014-09-25T00:38:51Z
  6. Lead and Zinc ores in Blair County, Penna.

    Resource Type: Book
    Creator: Bejamin LeRoy Miller
    Keyword: PAGS Progress Reports
    Publisher: Pennsylvania Bureau of Topographic and Geologic Survey
    Object Type: GenericWork
    Date Uploaded: 2014-09-25T00:38:51Z
  7. Brown Iron Ores in Pennsylvania

    Resource Type: Book
    Creator: J. Ross Corbin
    Keyword: PAGS Progress Reports
    Publisher: Pennsylvania Bureau of Topographic and Geologic Survey
    Object Type: GenericWork
    Date Uploaded: 2014-09-25T00:38:51Z
  8. Oil and Gas Developments in Pennsylvania in 1922

    Resource Type: Book
    Creator: M.E. Johnson
    Keyword: PAGS Progress Reports
    Publisher: Pennsylvania Bureau of Topographic and Geologic Survey
    Object Type: GenericWork
    Date Uploaded: 2014-09-25T00:38:51Z
  9. Magnetite in Pennsylvania

    Resource Type: Book
    Creator: Corbin, J. Ross
    Keyword: PAGS Progress Reports
    Publisher: Pennsylvania Bureau of Topographic and Geologic Survey
    Object Type: GenericWork
    Date Uploaded: 2014-09-25T00:38:50Z
  10. Geologic Structure of the Pittsburgh Quadrangle, PA.

    Resource Type: Book
    Creator: M.E. Johnson
    Keyword: PAGS Progress Reports
    Publisher: Pennsylvania Bureau of Topographic and Geologic Survey
    Object Type: GenericWork
    Date Uploaded: 2014-09-25T00:38:49Z