Columbia subject headings:
Ketencioğlu Hacı Yakup Ağa.
Turkey--History--Revolution, 1918-1923.
Harvard subject headings:
Princeton subject headings:
Balkan Peninsula--History--War of 1912-1913.
Greco-Turkish War, 1921-1922.
Ketencioğlu Hacı Yakup Ağa, approximately 1830-1933.
Ship captains--Turkey--Biography.
Turkey--History--Revolution, 1918-1923.