GEOMAGNETISM
2017-03-10 10:38:59.0 [tstevens] update Definition (NASA Space Science);
2013-03-11 15:15:21.0 [tbs1979] update Definition (Pertaining to the baseline state of the Earth's magnetic field used to base all other measurements from.);
Pertaining to the baseline state of the Earth's magnetic field used to base all other measurements from.
REFERENCE FIELDS