Columbia subject headings:
Rumelia--Foreign relations--Italy--Venice.
Venice (Italy)--Foreign relations--Rumelia.
Venice (Italy)--History.
Harvard subject headings:
Rumelia--Foreign relations--Italy--Venice.
Venice (Italy)--Foreign relations--Romania.
Venice (Italy)--Foreign relations.
Venice (Italy)--History--697-1508--Sources.
Venice (Italy)--History.
Princeton subject headings:
Rumelia--Foreign relations--Venice.
Venice (Italy)--Foreign relations--Rumelia.
Venice (Italy)--History.