Columbia subject headings:
Jews--Civilization--Congresses.
Yiddish language--History--20th century--Congresses.
Yiddish literature--20th century--History and criticism--Congresses.
Yiddish literature--Congresses.
Harvard subject headings:
Yiddish language--Congresses.
Yiddish literature--Congresses.
Yiddish philology--Congresses.
Princeton subject headings: