Columbia subject headings:
Balkan Peninsula--History--War of 1912-1913--Atrocities.
Bulgarians.
Macedonian question.
World War, 1914-1918--Atrocities.
Harvard subject headings:
Balkan Peninsula--History--War of 1912-1913--Atrocities.
Bulgarians
Macedonian question.
World War, 1914-1918--Atrocities
Princeton subject headings: