Columbia subject headings:
Astrodynamics--Congresses.
Celestial mechanics--Congresses.
Dynamics--Congresses.
Harvard subject headings:
Astrodynamics--Congresses.
Celestial mechanics--Congresses
Dynamics--Congresses
Princeton subject headings:
Astrodynamics--Congresses.
Celestial mechanics--Congresses.
Dynamics--Congresses.