Columbia subject headings:
Albania--History--1878-1912.
Albania--History--1912-1944.
Turkey--History--1878-1909.
Turkey--History--Mehmed V, 1909-1918.
Yemen (Republic)--History--19th century.
Yemen (Republic)--History--20th century.
Harvard subject headings:
Albania--History--1878-1912.
Albania--Social life and customs--History.
Turkey--History--Ottoman Empire, 1288-1918.
Yemen (Republic)--History.
Yemen (Republic)--Social policy.
Princeton subject headings:
Albania--History--1878-1912.
Albania--History--1912-1944.
Turkey--History--1878-1909.
Turkey--History--20th century.
Yemen--History--19th century.
Yemen--History--20th century.