Columbia subject headings:
Turkey--Emigration and immigration--History--20th century.
World War, 1914-1918--Campaigns--Turkey--Gallipoli Peninsula.
Yemen (Republic)--Emigration and immigration--History--20th century.
Yemenis--Turkey--History.
Harvard subject headings:
Turkey--Emigration and immigration--History--20th century.
World War, 1914-1918--Campaigns--Turkey--Gallipoli Peninsula
Yemen (Republic)--Emigration and immigration--History--20th century.
Yemenis--Turkey--History.
Princeton subject headings:
Turkey--Emigration and immigration--History--20th century.
World War, 1914-1918--Campaigns--Turkey--Gallipoli.
Yemen--Emigration and immigration--History--20th century.
Yemenis--Turkey--History.