Columbia subject headings:
Mural painting and decoration, Bulgarian--Bulgaria--Veliko Tŭrnovo.
Mural painting and decoration, Byzantine--Bulgaria--Veliko Tŭrnovo.
Tŭrnova, Bulgaria. Tsŭrkva Sveti Chetirideset mŭchenitsi.
Harvard subject headings:
Mural painting and decoration, Bulgarian--Bulgaria--Veliko Tŭrnovo.
Mural painting and decoration, Byzantine--Bulgaria--Veliko Tŭrnovo.
Tŭrnova, Bulgaria. Tsŭrkva Sveti Chetirideset mŭchenitsi.
Princeton subject headings:
Mural painting and decoration, Bulgarian--Tŭrnovo, Bulgaria.
Mural painting and decoration, Byzantine--Tŭrnovo, Bulgaria.
Tŭrnova, Bulgaria. Tsŭrkva Sveti Chetirideset mŭchenitsi.