Columbia subject headings:
Harvard subject headings:
Earth (Planet)--Congresses.
Earth (Planet)--Figure--Congresses.
Geodynamics--Congresses
Moon--Dynamics--Congresses.
Moon--Figure--Congresses.
Planets--Congresses
Planets--Dynamics--Congresses.
Planets--Figure--Congresses.
Princeton subject headings:
Earth--Figure--Congresses.
Geodesy--Congresses.
Moon--Figure--Congresses.
Planets--Figure--Congresses.
Selenodesy--Congresses.