Columbia subject headings:
Harvard subject headings:
Europe, Eastern--Ethnic relations.
Europe, Eastern--Politics and government.
Germans--Europe, Eastern--History--20th century
League of Nations
Minorities--Europe, Eastern--History--20th century.
Princeton subject headings:
Germany--Foreign relations--1918-1933.
Germany--Politics and government--1918-1933.
League of Nations--Germany.
Minorities--Government policy--Germany.