Columbia subject headings:
Harvard subject headings:
Brain drain--Germany.
Germany--Emigration and immigration.
Immigrants--Germany
Transnationalism.
Turkey--Emigration and immigration.
Turks--Germany
Princeton subject headings:
Brain drain--Germany.
Germany--Emigration and immigration.
Immigrants--Germany.
Transnationalism.
Turkey--Emigration and immigration.
Turks--Germany.