Columbia subject headings:
Harvard subject headings:
Turkey--Foreign relations--19th century--Congresses.
Turkey--Foreign relations--20th century--Congresses.
Turkey--Foreign relations.
Turkey--Politics and government--19th century.
Turkey--Politics and government--20th century.
Princeton subject headings:
Turkey--Foreign relations--Congresses.
Turkey--Politics and government--19th century--Congresses.
Turkey--Politics and government--20th century--Congresses.