Searching Books & More : "Maps"

1990 X Peddie, Norman W X
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The magnetic field in the United States, 1990, total intensity chart

Published: Reston, Va. : U.S. Dept. of the Interior, U.S. Geological Survey ; Denver, CO : For sale by Map Distribution, 1992
Format: Map
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Cover images provided by Open Library

The magnetic field in the United States, 1990, declination chart

Published: Reston, Va. : U.S. Dept. of the Interior, U.S. Geological Survey ; Denver, CO : For sale by Map Distribution, 1992
Format: Map
Retrieving Holdings Information