Columbia subject headings:
Russkai︠a︡ pravoslavnai︠a︡ t︠s︡erkovʹ--Liturgy.
Sacred vocal music--Russia.
Harvard subject headings:
Russkai︠a︡ pravoslavnai︠a︡ t︠s︡erkovʹ--Liturgy.
Sacred vocal music--Soviet Union.
Princeton subject headings:
Russkai︠a︡ pravoslavnai︠a︡ t︠s︡erkovʹ--Liturgy.
Sacred vocal music--Russia.