Columbia subject headings:
Harvard subject headings:
Avvakum Petrovich, Protopope, 1620 or 1621-1682
Epifaniĭ, monk, active 17th century.
Princeton subject headings:
Avvakum Petrovich, Protopope, 1620 or 1621-1682.
Epifaniĭ, Inok, active 17th century.