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General Information

  • Title: The Middle Ordovician of central and south central Pennsylvania
  • Author(s): Field, R.M.
  • Publishing Organization: American Journal of Science
  • Series and Number: American Journal of Science, 4th Series v. 48, no. 288 [p. 403-428]
  • Publication Date: 1919
  • Cross Section: None
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* Names and boundaries are not necessarily authoritative, and are provided here solely for general orientation.