Columbia subject headings:
Diplomats--Turkey--Biography.
Freemasonry--Turkey.
Olgaçay, İsmail Berduk, 1924-
Turkey--Politics and government--1960-1980.
Turkey--Politics and government--1980-
Harvard subject headings:
Turkey--Foreign relations.
Turkey--Politics and government.
Princeton subject headings:
Diplomats--Turkey--Biography.
Olgaçay, İsmail Berduk, 1924-