000K  utf8
1500  fre
4000  Letters [from the Austrian Ambassador to Russia, Count Ludwig von Lebzeltern,] to [the Director of Moscow and St Petersburg Post Offices, Active State Councillor] Konstantin Iakovlevich Bulgakov
4000  Письма к Булгакову, Константину Яковлевичу
4060  20
4961  https://ditav.gbv.de/receive/lod_mods_00000841