Columbia subject headings:
Harvard subject headings:
Russkai︠a︡ pravoslavnai︠a︡ t︠s︡erkovʹ--Liturgy--Periodicals.
Princeton subject headings:
Periodicals.
Russkai︠a︡ pravoslavnai︠a︡ t︠s︡erkovʹ--Liturgy--Periodicals.