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Geologic map of the Nazareth quadrangle, Northampton County, Pennsylvania [microform] / U.S. Department of the Interior, U.S. Geological Survey ; by John M. Aaron and Avery Ala Drake, Jr (Open-file report ; 97-33)

Geologic map of the Nazareth quadrangle, Northampton County, Pennsylvania [microform] / U.S. Department of the Interior, U.S. Geological Survey ; by John M. Aaron and Avery Ala Drake, Jr (Open-file report ; 97-33)
Microform図書
1997<YCA-I 19.76:97-33>
National Diet Library
  • Subject HeadingGeology -- Pennsylvania -- Northampton County -- Maps

Geologic map of the Hellertown quadrangle, Northampton, Bucks, and Lehigh counties, Pennsylvania [microform] / U.S. Department of the Interior, U.S. Geological Survey ; by Avery Ala Drake, Jr (Open-file report ; 96-547)

Geologic map of the Hellertown quadrangle, Northampton, Bucks, and Lehigh counties, Pennsylvania [microform] / U.S. Department of the Interior, U.S. Geological Survey ; by Avery Ala Drake, Jr (Open-file report ; 96-547)
Microform図書
1996<YCA-I 19.76:96-547>
National Diet Library
  • Subject HeadingGeology -- Pennsylvania -- Northampton County -- Maps Geology -- Pennsylvania -- Bu...

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