Russkie pisateli ėmigrat︠s︡ii : biograficheskie svedenii︠a︡ i bibliografii︠a︡ ikh knig po bogoslovii︠u︡, religioznoĭ filosofii, t︠s︡erkovnoĭ istorii i pravoslavnoĭ kulʹture, 1921-1972 = Russian emigré authors : a biographical index and bibliography of their works on theology, religious philosophy, church history and orthodox culture, 1921-1972