Columbia subject headings:
Galaxies--Evolution--Congresses.
Red shift--Congresses.
Ultraviolet astronomy--Congresses.
Harvard subject headings:
Galaxies--Evolution--Congresses
Red shift--Congresses.
Ultraviolet astronomy--Congresses.
Princeton subject headings:
Galaxies--Evolution--Congresses.
Red shift--Congresses.
Ultraviolet astronomy--Congresses.