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National Geologic Map Database

General Information

  • Title: Water resources of the Philadelphia district
  • Author(s): Bascom, Florence
  • Publishing Organization: U.S. Geological Survey
  • Series and Number: Water-Supply Paper 106 [75 p.]
  • Publication Date: 1904
  • Map Scale: 1:280,560
  • Cross Section: Yes
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* Names and boundaries are not necessarily authoritative, and are provided here solely for general orientation.