pl23_cgs02155.jpg
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https://www.noaa.gov/media/digital-library-photo/pl23cgs02155jpgDescription
Calibrating geomagnetic instruments at the Coast and Geodetic Surveygeomagnetic observatory at Corbin, Virginia.
Display Date
1963 September
Collection
Historic Coast & Geodetic Survey
Keywords
Coast and Geodetic Survey
Geophysics Geomagnetism