Columbia subject headings:
Cepheids--Congresses.
Pulsating stars--Congresses.
Stars--Congresses.
Harvard subject headings:
Cepheids--Congresses.
Pulsating stars--Congresses.
Stars--Congresses
Stellar oscillations--Congresses.
Princeton subject headings:
Cepheids--Congresses.
Pulsating stars--Congresses.
Stars--Congresses.