Title: Opisanie dokumentalʹnykh istochnikov po istorii russko-bolgarskikh svi︠a︡zeĭ za 1850-1870 gody v rukopisnykh fondakh Gosudarstvennoĭ Publichnoĭ biblioteki im. "M.E. Saltykova-Shchedrina"
Subjects: Sources, Relations, Manuscripts, Catalogs, Gosudarstvennai︠a︡ publichnai︠a︡ biblioteka imeni M.E. Saltykova-Shchedrina
Places: Soviet Union, Bulgaria, Russia (Federation), Saint Petersburg