Columbia subject headings:
Balkan League.
Balkan Peninsula--History--War of 1912-1913.
Bulgaria--Foreign relations.
Bulgaria--History--1878-1944.
Harvard subject headings:
Balkan League.
Balkan Peninsula--History--War of 1912-1913.
Bulgaria--Foreign relations.
Bulgaria--History--1878-1944.
Princeton subject headings:
Balkan League.
Balkan Peninsula--History--War of 1912-1913.
Bulgaria--Foreign relations.
Bulgaria--History--1878-1944.