Columbia subject headings:
Cultural pluralism.
Emigration and immigration.
Germany--Emigration and immigration.
Harvard subject headings:
Germany--Emigration and immigration--History.
Germany--Ethnic relations--History.
Immigrants--Cultural assimilation--Germany--History.
Multiculturalism--Germany--History.
Social integration--Germany--History.
Princeton subject headings:
Cultural pluralism.
Emigration and immigration.
Germany--Emigration and immigration.