Title: Pi︠a︡tidesi︠a︡tili︠e︡tīe (1839-1889) vozsoedinenīi︠a︡ s pravoslavnoi︠u︡ t︠s︡erkovʹi︠u︡ zapadno-russkikh unīatov
Subjects: Relations, Catholic Church, History, Russkai︠a︡ pravoslavnai︠a︡ t︠s︡erkovʹ, Byzantine rite
Time periods: 19th century