Columbia subject headings:
Missions, German--Turkey--History--19th century.
Missions, German--Turkey--History--20th century.
Protestant churches--Missions--Turkey--History--19th century.
Protestant churches--Missions--Turkey--History--20th century.
Harvard subject headings:
Missions, German--Turkey--History--19th century.
Missions, German--Turkey--History--20th century.
Protestant churches--Missions--Turkey--History--19th century.
Protestant churches--Missions--Turkey--History--20th century.
Princeton subject headings:
Church schools--Turkey--History.
Education--Turkey--Foreign influences.
Germany--Relations--Turkey--History.
Missions, German--Turkey--History.
Protestant churches--Missions--Turkey--History.
Schools, German--Turkey--History.
Turkey--Relations--Germany--History.