Showing 1 - 20 results of 22 for search '"earth science"', query time: 0.51s Refine Results
  1. 1
    Activities of the United States Geological Survey in Pennsylvania /
    Published 1997
    Subjects: “...Earth sciences Pennsylvania....”
    Government Document Microform Book
  2. 2
    U.S. Geological Survey programs in Pennsylvania.
    Published 1996
    Subjects: “...Earth sciences Research Pennsylvania....”
    Government Document Book
  3. 3
    XVI International Geological Congress : Southern Pennsylvania and Maryland.
    Published 1933
    Subjects: “...Earth sciences. http://id.loc.gov/authorities/subjects/sh85040468...”
    Electronic resource (PDF)
    Government Document eBook
  4. 4
    XVI International Geological Congress : Pennsylvanian of the Northern Mid-Continent Region.
    Published 1932
    Subjects: “...Earth sciences. http://id.loc.gov/authorities/subjects/sh85040468...”
    Electronic resource (PDF)
    Government Document eBook
  5. 5
    Hydrogeologic framework of the diabase aquifer at the Boarhead Farms Superfund site, Bridgeton Township, Bucks County, Pennsylvania.
    by Schreffler, Curtis L.
    Published 1996
    Government Document Book
  6. 6
    Effects of surface mining on the hydrology and biology in the Stony Fork Basin, Fayette County, Pennsylvania, 1978-85.
    Published 1995
    Government Document Book
  7. 7
    Simulation of streamflow and sediment transport in two surface-coal-mined basins in Fayette County, Pennsylvania.
    by Sams, James I.
    Published 1995
    Government Document Book
  8. 8
    Evaluation of methods for delineating areas that contribute water to wells completed in valley-fill aquifers in Pennsylvania.
    by Risser, Dennis W.
    Published 1994
    Government Document Book
  9. 9
    Geohydrology and water quality of the unconsolidated deposits in Erie County, Pennsylvania.
    by Buckwalter, Theodore F.
    Published 1996
    Government Document Book
  10. 10
    Land use, organochlorine compound concentrations, and trends in benthic-invertebrate communities in selected stream basins in Chester County, Pennsylvania.
    by Hardy, Mark A.
    Published 1995
    Government Document Book
  11. 11
    Radium and radon in ground water in the Chickies Quartzite, southeastern Pennsylvania.
    by Senior, Lisa A.
    Published 1995
    Government Document Book
  12. 12
    Water and sediment budgets for the stormwater-drainage channel at the Navy Ships Parts Control Center near Mechanicsburg, Pennsylvania, water year 1993 /
    by Reed, Lloyd A.
    Published 1994
    Government Document Book
  13. 13
    Geohydrology of, and nitrogen and chloride in, the glacial aquifer, Milford-Matamoras area, Pike County, Pennsylvania /
    by Senior, Lisa A.
    Published 1994
    Government Document Book
  14. 14
    Hydrogeology and ground-water quality of northern Bucks County, Pennsylvania /
    by Sloto, Ronald A.
    Published 1994
    Government Document Book
  15. 15
    Geohydrology and vertical distribution of volatile organic compounds in ground water, Fischer and Porter Company Superfund Site, Warminster, Bucks County, Pennsylvania.
    by Sloto, Ronald A.
    Published 1995
    Government Document Book
  16. 16
    Hydrogeologic setting and simulation of pesticide fate and transport in the unsaturated zone of a regolith-mantled, carbonate-rock terrain near Newville, Pennsylvania.
    by Hippe, Daniel J.
    Published 1996
    Government Document Book
  17. 17
    Hydrology and the effects of selected agricultural best-management practices in the Bald Eagle Creek Watershed, York County, Pennsylvania, prior to and during nutrient management : Water-Quality Study for the Chesapeake Bay Program.
    by Langland, Michael J.
    Published 1995
    Government Document Book
  18. 18
    Hydrogeology, herbicides and nutrients in ground water and springs, and relation of water quality to land use and agricultural practices near Carlisle, Pennsylvania /
    by Hippe, Daniel J.
    Published 1994
    Government Document Book
  19. 19
    Evaluation of agricultural best-management practices in the Conestoga River Headwaters, Pennsylvania : effects of nutrient management on water quality in the Little Conestoga Creek Headwaters, 1983-89.
    Published 1996
    Government Document Book
  20. 20
    Geohydrology and simulation of ground-water flow in the Red Clay Creek Basin, Chester County, Pennsylvania, and New Castle County, Delaware /
    by Vogel, Karen L.
    Published 1993
    Government Document Book
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