Columbia subject headings:
Poznań (Poland)--Emigration and immigration.
Poznań (Poland)--Politics and government.
Prussia, West (Poland)--Emigration and immigration.
Prussia, West (Poland)--Politics and government.
Harvard subject headings:
Pomerania (Poland and Germany)--Emigration and immigration.
Pomerania (Poland and Germany)--Politics and government.
Poznań (Poland)--Emigration and immigration.
Poznań (Poland)--Politics and government.
Prussia, West (Poland)--Emigration and immigration.
Prussia, West (Poland)--Politics and government.
Princeton subject headings:
Germany--Foreign relations--Poland.
Poland--Foreign relations--Germany.
Population transfers--Germans--History--20th century.
Poznań (Poland : Voivodeship)--Ethnic relations.
Poznań (Poland : Voivodeship)--Politics and government.
Prussia, West (Poland)--Ethnic relations.
Prussia, West (Poland)--Politics and government.