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Showing 1 - 2 results of 2 for search 'Bureau of Topographic and Geologic Survey,', query time: 0.17s Refine Results
  1. 1
    Properties and uses of Pennsylvania shales and clays, Southeastern Pennsylvania /
    Published 1971
    “...[Commonwealth of Pennsylvania, Bureau of Topographic and Geologic Survey],...”
    Book
  2. 2
    Proceedings /
    Published 1970
    “...[Commonwealth of Pennsylvania, Bureau of Topographic and Geologic Survey],...”
    Conference Proceeding Book
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