Columbia subject headings:
Balkan Peninsula--Religious life and customs.
Caucasus--Religious life and customs.
Harvard subject headings:
Balkan Peninsula--Religious life and customs.
Caucasus--Religious life and customs.
Pilgrims and pilgrimages--Balkan Peninsula.
Pilgrims and pilgrimages--Caucasus.
Religious pluralism--Balkan Peninsula.
Religious pluralism--Caucasus.
Princeton subject headings:
Balkan Peninsula--Religious life and customs.
Caucasus--Religious life and customs.
Pilgrims and pilgrimages--Balkan Peninsula.
Pilgrims and pilgrimages--Caucasus.
Religious pluralism--Balkan Peninsula.
Religious pluralism--Caucasus.