Title: Taĭnye Sobory Taĭnoĭ T︠S︡erkvi
Subjects: Councils and synods, History, Russkai͡a pravoslavnai͡a t͡serkovʹ, Russkai︠a︡ pravoslavnai︠a︡ t︠s︡erkovʹ
Places: Russia (Federation)
Time periods: 20th century