Columbia subject headings:
Milky Way--Congresses.
Stars--Clusters--Congresses.
Stars--Globular clusters--Congresses.
Harvard subject headings:
Milky Way--Congresses.
Stars--Clusters--Congresses
Stars--Globular clusters--Congresses.
Stellar dynamics--Congresses.
Princeton subject headings:
Milky Way--Congresses.
Stars--Clusters--Congresses.
Stars--Globular clusters--Congresses.