Showing 1 - 9 results of 9 for search 'Geyer, Alan R.', query time: 0.17s Refine Results
  1. 1
    Geology, mineral resources, and environmental geology of the Palmyra Quadrangle : Lebanon and Dauphin Counties /
    by Geyer, Alan R.
    Published 1970
    Book
  2. 2
    Building stones of Pennsylvania's capital area /
    by Geyer, Alan R.
    Published 1977
    Book
  3. 3
    Environmental geology for land-use planning /
    by Geyer, Alan R.
    Published 1972
    Book
  4. 4
    Mineral collecting in Pennsylvania /
    by Geyer, Alan R.
    Published 1976
    Book
  5. 5
    Engineering characteristics of the rocks of Pennsylvania : environmental geology supplement to the state geologic map /
    by Geyer, Alan R.
    Published 1982
    Book
  6. 6
    Outstanding scenic geological features of Pennsylvania /
    by Geyer, Alan R.
    Published 1979
    Book
  7. 7
    Mineral collecting in Pennsylvania /
    by Lapham, Davis M.
    Published 1969
    Other Authors: “...Geyer, Alan R....”
    Book
  8. 8
    Environmental geology of the greater Harrisburg metropolitan area /
    by McGlade, William G.
    Published 1976
    Other Authors: “...Geyer, Alan R....”
    Book
  9. 9
    Engineering characteristics of the rocks of Pennsylvania ; environmental geology supplement to the State geologic map /
    by McGlade, William G.
    Published 1972
    Other Authors: “...Geyer, Alan R....”
    Book
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