Columbia subject headings:
Harvard subject headings:
Europe--Cultural policy--History--20th century--Congresses.
Europe--Foreign relations--Germany--Congresses.
Germans--Europe--History--20th century--Congresses.
Germany--Foreign relations--Europe--Congresses.
Minorities--Government policy--Europe--History--20th century--Congresses.
Minorities--Government policy--Germany--History--20th century--Congresses.
Princeton subject headings:
Europe--Cultural policy--History--20th century--Congresses.
Europe--Foreign relations--Germany--20th century--Congresses.
Germans--Europe--History--20th century--Congresses.
Germany--Foreign relations--Europe--20th century--Congresses.
Minorities--Government policy--Europe--History--20th century--Congresses.
Minorities--Government policy--Germany--History--20th century--Congresses.