2.0.1 spase://SMWG/Instrument/WDC/Tonghai/Magnetometer Tonghai Ground Magnetic Field Instrument 2012-03-07T04:55:49Z The magnetic field instrument at the Tonghai ground station Institute of Geophysics, China Seismological Bureau spase://SMWG/Person/Dong.Mei.Yang GeneralContact spase://SMWG/Person/Lee.Frost.Bargatze MetadataContact Magnetometer None Identified spase://SMWG/Observatory/WDC/Tonghai