Columbia subject headings:
Galaxies--Evolution--Congresses.
Nucleosynthesis--Congresses.
Stars--Evolution--Congresses.
Harvard subject headings:
Galaxies--Evolution--Congresses
Nucleosynthesis--Congresses.
Stars--Evolution--Congresses
Princeton subject headings:
Galaxies--Evolution--Congresses.
Nucleosynthesis--Congresses.
Stars--Evolution--Congresses.