Columbia subject headings:
Germans--Europe, Eastern.
Germany--Relations--Hungary.
Hungary--Ethnic relations.
Hungary--Relations--Germany.
Refugees--Germany.
Harvard subject headings:
Europe--Politics and government--Congresses.
Europe--Relations--Congresses.
Germans--Europe, Eastern--Congresses.
Germany--Politics and government--20th century--Congresses.
Germany--Relations--Hungary--Congresses.
Hungary--Politics and government--20th century--Congresses.
Hungary--Relations--Germany--Congresses.
Refugees--Germany--Congresses.
Princeton subject headings:
Germans--Europe, Eastern.
Germany--Relations--Hungary.
Hungary--Ethnic relations.
Hungary--Relations--Germany.
Refugees--Germany.