Showing 1 - 20 results of 63 for search '', query time: 0.16s Refine Results
  1. 1
    Coal resources of Allegheny County, Pennsylvania : part 1, coal crop lines, mined-out areas, and structure contours /
    Published 1985
    Book
  2. 2
    Geology and groundwater resources of western Crawford County, Pennsylvania /
    by Schiner, George R., 1926-
    Published 1979
    Book
  3. 3
    The petroleum industry and the future petroleum province in Pennsylvania, 1970 /
    Published 1970
    Book
  4. 4
    McDonald and adjacent oil fields, Allegheny and Washington Counties, Pennsylvania.
    Published 1949
    Book
  5. 5
    Bedrock geology and mineral resources of the Salladasburg and Cogan Station quadrangles, Lycoming County, Pennsylvania /
    by Faill, Rodger T.
    Published 1977
    Book
  6. 6
    Geology and mineral resources of the Harrisburg west area, Cumberland and York Counties, Pennsylvania /by Samuel I. Root.
    by Root, Samuel I.
    Published 1977
    Book
  7. 7
    Geology and land use in eastern Washington County, Pennsylvania /
    Book
  8. 8
    The Devonian of Pennsylvania : Middle and upper Devonian /
    Published 1939
    Book
  9. 9
    Salt deposits in the Salina Group in Pennsylvania /
    Internet Archive, State Library of Pennsylvania
    Government Document Book
  10. 10
    Environmental geology for land-use planning /
    by Geyer, Alan R.
    Published 1972
    Book
  11. 11
    Pennsylvania geology.
    Journal
  12. 12
    Progress report.
    Serial
  13. 13
    Educational series.
    Serial
  14. 14
    Geology and groundwater resources of Monroe County, Pennsylvania /
    by Carswell, Louis D.
    Published 1979
    Book
  15. 15
    The economic geology of the Upper Freeport coal in northeastern Greene county, Pennsylvania /
    by Skema, V. W. (Viktoras W.)
    Published 1982
    Book
  16. 16
    Geology and ground-water resources of northern Mercer County, Pennsylvania /
    by Schiner, George R., 1926-
    Published 1976
    Book
  17. 17
    Geology and mineral resources of the Bloomsburg and Mifflinville quadrangles and part of the Catawissa quadrangle, Columbia County, Pennsylvania /
    by Inners, Jon D.
    Published 1981
    Book
  18. 18
    Geology of the Appalachian Trail in Pennsylvania /
    by Wilshusen, John P.
    Published 1983
    Book
  19. 19
    Outstanding scenic geological features of Pennsylvania /
    by Geyer, Alan R.
    Published 1979
    Book
  20. 20
    Geology and groundwater resources of northern Berks County, Pennsylvania /
    by Wood, Charles R.
    Published 1978
    Book
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