Columbia subject headings:
Balkan Peninsula--Church history--Sources.
Balkan Peninsula--History--Sources.
Catholic Church--Balkan Peninsula--History--17th century--Sources.
Catholic Church--Foreign relations--Turkey--Sources.
Catholic Church--Missions--Balkan Peninsula--History--17th century--Sources.
Catholic Church--Relations--Orthodox Eastern Church--Sources.
Catholics--Balkan Peninsula--History--17th century--Sources.
Orthodox Eastern Church members--Balkan Peninsula--History--17th century--Sources.
Orthodox Eastern Church--Balkan Peninsula--History--17th century--Sources.
Orthodox Eastern Church--Relations--Catholic Church--Sources.
Turkey--Foreign relations--Catholic Church--Sources.
Harvard subject headings:
Balkan Peninsula--Church history--Sources.
Balkan Peninsula--History--Sources.
Catholic Church--Balkan Peninsula--History--17th century--Sources.
Catholic Church--Foreign relations--Turkey--Sources.
Catholic Church--Missions--Balkan Peninsula--History--17th century--Sources.
Catholic Church--Relations--Orthodox Eastern Church--Sources.
Catholics--Balkan Peninsula--History--17th century--Sources.
Orthodox Eastern Church members--Balkan Peninsula--History--17th century--Sources.
Orthodox Eastern Church--Balkan Peninsula--History--17th century--Sources.
Orthodox Eastern Church--Relations--Catholic Church--Sources.
Turkey--Foreign relations--Catholic Church--Sources.
Princeton subject headings:
Balkan Peninsula--Church history--Sources.
Balkan Peninsula--History--Sources.
Catholic Church--Balkan Peninsula--History--Sources.
Catholic Church--Foreign relations--Turkey--Sources.
Catholic Church--Missions--Balkan Peninsula--History--Sources.
Catholic Church--Relations--Orthodox Eastern Church--Sources.
Catholics--Balkan Peninsula--History--Sources.
Orthodox Eastern Church members--Balkan Peninsula--History--Sources.
Orthodox Eastern Church--Balkan Peninsula--History--Sources.
Orthodox Eastern Church--Relations--Catholic Church--Sources.
Turkey--Foreign relations--Catholic Church--Sources.