Columbia subject headings:
Balkan Peninsula--History--War of 1912-1913.
Eugenics.
United States--History--Civil War, 1861-1865.
World War, 1914-1918.
Harvard subject headings:
Balkan Peninsula--History--War of 1912-1913.
Eugenics.
United States--History--Civil War, 1861-1865
World War, 1914-1918.
Princeton subject headings:
Balkan Peninsula--History--War of 1912-1913.
Eugenics.
United States--History--Civil War, 1861-1865.
World War, 1914-1918.