2021-11-17 14:01:32.0 [tstevens] Move Concepts delete broader relation (null); add broader relation (GRAVITY STATIONS [9a869e6f-df72-49dd-ac66-b9d319b9db77,826540] - Permanent Land Sites [0ec10fd9-492c-498a-b6d8-e2840cc3643b,835887]);
Permanent Land Sites
GRAVITY STATIONS
Gravity stations make observations related to the Earth's gravity.