Columbia subject headings:
Russkai︠a︡ pravoslavnai︠a︡ t︠s︡erkovʹ--Doctrines--History.
Russkai︠a︡ pravoslavnai︠a︡ t︠s︡erkovʹ--Liturgy--Texts--History and criticism.
Harvard subject headings:
Russian language--Religious aspects--Russkai︠a︡ pravoslavnai︠a︡ t︠s︡erkovʹ
Russkai︠a︡ pravoslavnai︠a︡ t︠s︡erkovʹ--Rituals.
Russkai︠a︡ pravoslavnai︠a︡ t︠s︡erkovʹ--Sermons.
Princeton subject headings: