Columbia subject headings:
Foreign workers, Turkish--Europe.
Foreign workers, Turkish--Germany.
Harvard subject headings:
Foreign workers, Turkish--Europe.
Foreign workers, Turkish--Germany.
Princeton subject headings:
European Economic Community countries--Emigration and immigration--Economic aspects.
Foreign workers, Turkish--Europe.
Foreign workers, Turkish--Germany (West).
Germany (West)--Emigration and immigration--Economic aspects.
Turkey--Emigration and immigration--Economic aspects.