Columbia subject headings:
Astronomy--Data processing--Congresses.
Astronomy--Information services--Congresses.
Information storage and retrieval systems--Congresses.
Harvard subject headings:
Astronomy--Data processing--Congresses
Astronomy--Information services--Congresses.
Information storage and retrieval systems--Astronomy--Congresses.
Princeton subject headings:
Astronomy--Data processing--Congresses.
Astronomy--Information services--Congresses.
Information storage and retrieval systems--Astronomy--Congresses.