National Geologic Map Database
General Information
- Title: Magnetic field of the United States, 1990: total intensity chart
- Author(s): Peddie, N.W.
- Publishing Organization: U.S. Geological Survey
- Series and Number: Geophysical Investigations Map GP-1002-F
- Publication Date: 1992
- Map Scale: 1:5,000,000
- Cross Section: None
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* Names and boundaries are not necessarily authoritative, and are provided here solely for general orientation.