Columbia subject headings:
Harvard subject headings:
Assimilation (Sociology)
Foreign workers, Turkish--Germany--History--20th century.
Germany--Emigration and immigration--History--20th century.
Turkey--Emigration and immigration--History--20th century.
Turks--Germany--Social conditions--20th century.
Princeton subject headings:
Foreign workers, Turkish--Germany.
Turks--Cultural assimilation--Germany.