Columbia subject headings:
Ethnology--Congresses.
Festivals--Congresses.
Folk literature--History and criticism--Congresses.
Play--Congresses.
Harvard subject headings:
Ethnology--Congresses
Festivals--Congresses.
Folk literature--History and criticism--Congresses.
Play--Congresses.
Princeton subject headings:
Ethnology--Congresses.
Festivals--Congresses.
Folk literature--History and criticism--Congresses.
Play--Congresses.