Columbia subject headings:
Germany--Emigration and immigration--Congresses.
Immigrants--Germany--Social conditions--Congresses.
Segregation--Germany--Congresses.
Turks--Germany--Social conditions--Congresses.
Harvard subject headings:
Emigration and immigration--Europe--Congresses.
Ethnology--Europe--Congresses
Germany--Emigration and immigration--Congresses.
Immigrants--Germany--Social conditions--Congresses.
Segregation--Germany--Congresses.
Turkey--Emigration and immigration--Congresses.
Turks--Germany--Social conditions--Congresses.
Princeton subject headings: