Columbia subject headings:
Morozova, Feodosii︠a︡ Prokofʹevna Sokovnina, 1632-1675.
Old Believers.
Harvard subject headings:
Morozova, Feodosii͡a Prokofʹevna Sokovnina, 1632-1675.
Old Believers.
Princeton subject headings:
Morozova, Feodosii︠a︡ Prokofʹevna Sokovnina, 1632-1675.
Old Believers.