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National Geologic Map Database

General Information

  • Title: Magnetic field of the earth, 1990: total intensity chart
  • Author(s): Peddie, N.W.
  • Publishing Organization: U.S. Geological Survey
  • Series and Number: Geophysical Investigations Map GP-1004-F
  • Publication Date: 1993
  • Map Scale: 1:40,053,700
  • Cross Section: None
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* Names and boundaries are not necessarily authoritative, and are provided here solely for general orientation.