Showing 1 - 10 results of 10 for search 'Willard, Bradford, 1894-', query time: 0.02s Refine Results
  1. 1
    Author: Willard, Bradford, 1894-
    Published 1938
    In collection: Published Materials
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    A Paleozoic section in south-central Pennsylvania
  2. 2
    Author: Willard, Bradford, 1894-
    Published 1938
    In collection: Published Materials
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    A Paleozoic section at Delaware water gap
  3. 3
    Author: Willard, Bradford, 1894-
    Published 1932
    In collection: Published Materials
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    Devonian faunas in Pennsylvania
  4. 4
    Author: Willard, Bradford, 1894-
    Published 1958
    In collection: Published Materials
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    Guide to the highway geology from Harrisburg to Bald Eagle Mountain
  5. 5
    Author: Willard, Bradford, 1894-1973
    Published 1962
    In collection: Published Materials
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    Pennsylvania geology summarized
  6. 6
    Author: Willard, Bradford, 1894-1973
    Published 1938
    In collection: Published Materials
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    A Paleozoic section in south-central Pennsylvania
  7. 7
    Published 1959
    In collection: Published Materials
    Other Authors: '; “...Willard, Bradford, 1894-...”
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    Geology and mineral resources of Bucks County, Pennsylvania
  8. 8
    Author: Butts, Charles, 1863-1946
    Published 1939
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    Tyrone quadrangle : geology and mineral resources
  9. 9
    Author: Butts, Charles, 1863-1946
    Published 1939
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    Tyrone quadrangle : geology and mineral resources
  10. 10
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    Northampton county, Pennsylvania : geology and geography

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