Columbia subject headings:
Bulgaria--History--1878-1944.
Macedonia--History--1878-1912.
Macedonia--History--Autonomy and independence movements.
VMRO.
Harvard subject headings:
Bulgaria--History--1878-1944.
Macedonia--History--1878-1912.
Macedonia--History--Autonomy and independence movements.
Macedonia--History.
VMRO
Princeton subject headings:
Bulgaria--History--1878-1944.
Macedonia--History--1878-1912.
Macedonia--History--Autonomy and independence movements.
VMRO.