Title: Russia's catacomb saints
Subjects: Biography, Christian martyrs, Christian saints, Church history, Doctrines, History, Orthodox Eastern Church, Persecution, Russkai︠a︡ pravoslavnai︠a︡ t︠s︡erkovʹ, Russkai︠a︡ pravoslavnai︠a︡ t︠s︡erkovʹ zagranit︠s︡eĭ, Doctrinal and controversial works, Christenvervolgingen, Martelaren, Doctrinal Theology
Places: Soviet Union
Time periods: 20th century