Columbia subject headings:
Harvard subject headings:
Celtic antiquities--Congresses.
Celtic languages--Etymology--Names--Congresses.
Celts--Religion--Congresses.
Europe--Antiquities--Sources--Congresses.
Gods, Celtic--Name--Congresses.
Gods, Celtic--Names--Congresses.
Inscriptions--Rome--Congresses.
Mythology, Celtic--Congresses.
Names, Personal, in literature--Congresses.
Names, Personal--Celtic--Congresses.
Princeton subject headings:
Celtic antiquities--Congresses.
Celtic languages--Etymology--Names--Congresses.
Celts--Religion--Congresses.
Europe--Antiquities--Sources--Congresses.
Gods, Celtic--Name--Congresses.
Names, Personal, in literature--Congresses.
Names, Personal--Celtic--Congresses.