Columbia subject headings:
Balkan Peninsula--Boundaries.
Boundaries--Religious aspects.
Europe, Eastern--Boundaries.
Religion and geography.
Religion and politics--Turkey.
Turkey--Boundaries.
Harvard subject headings:
Boundaries--Religious aspects--Congresses.
Religion and geography--Congresses.
Religion and politics--Balkan Peninsula--Congresses.
Religion and politics--Europe, Eastern--Congresses.
Religion and politics--Turkey--Congresses.
Princeton subject headings:
Balkan Peninsula--Boundaries.
Boundaries--Religious aspects.
Europe, Eastern--Boundaries.
Religion and geography.
Religion and politics--Turkey.
Turkey--Boundaries.