000K  utf8
1500  fre
4000  Letters [from the Secretary to the Russian Embassy in Frankfurt-am-Main, Ivan Emanuilovich Persiani,] to [the Director of the St Petersburg Post Office, State Councillor] Konstantin Iakovlevich Bulgakov
4000  Письма к Булгакову, Константину Яковлевичу
4060  4
4961  https://ditav.gbv.de/receive/lod_mods_00000847