The magnetic field in the United States, 1985: Declination chart (Q91311)
From geokb
A USGS Geophysical Investigations Map from 1988
| Language | Label | Description | Also known as |
|---|---|---|---|
| English | The magnetic field in the United States, 1985: Declination chart |
A USGS Geophysical Investigations Map from 1988 |
