Columbia subject headings:
Sergiĭ, Patriarch of Moscow and All Russia, 1867-1944.
Harvard subject headings:
Russkai︠a︡ pravoslavnai︠a︡ t︠s︡erkovʹ--Bishops--Biography.
Russkai︠a︡ pravoslavnai︠a︡ t︠s︡erkovʹ--History.
Sergiĭ, Patriarch of Moscow and All Russia, 1867-1944.
Princeton subject headings:
Orthodox Eastern Church--History.
Russkai︠a︡ pravoslavnai︠a︡ t︠s︡erkovʹ--Bishops--Biography.
Sergiĭ, Patriarch of Moscow and All Russia, 1867-1944.