Columbia subject headings:
Muslims--Bulgaria--Folklore.
Harvard subject headings:
Aliani--Bulgaria--Bisert︠s︡i--Social life and customs.
Aliani--Bulgaria--Mŭdrevo--Social life and customs.
Bisert︠s︡i (Bulgaria)--Social life and customs.
Mŭdrevo (Bulgaria)--Social life and customs.
Princeton subject headings:
Aliani (Bulgarian people)--Bulgaria--Bisert︠s︡i--Social life and customs.
Aliani (Bulgarian people)--Bulgaria--Mŭdrevo--Social life and customs.
Bisert︠s︡i (Bulgaria)--Social life and customs.
Mŭdrevo (Bulgaria)--Social life and customs.
Nosairians--Bulgaria--Bisert︠s︡i--Social life and customs.
Nosairians--Bulgaria--Mŭdrevo--Social life and customs.