Columbia subject headings:
Harvard subject headings:
Balkan Peninsula--Church history--Congresses.
Catholic Church--Balkan Peninsula--History--Congresses.
Catholic Church--Europe, Eastern--History--Congresses.
Church and state--Europe, Eastern--History--Congresses.
Europe, Eastern--Church history--Congresses.
Nationalism and historiography--Europe, Eastern--Congresses.
Orthodox Eastern Church--Balkan Peninsula--History--Congresses.
Orthodox Eastern Church--Europe, Eastern--History--Congresses.
Princeton subject headings:
Catholic Church--Byzantine rite, Ukrainian--History--Congresses.
Catholic Church--Byzantine rite--History--Congresses.
Church and state--Europe, Eastern--History--Congresses.
Nationalism and historiography--Europe, Eastern--Congresses.