000K  utf8
1500  rus
4000  Reports [by the Russian Envoy Extraordinary and Minister Plenipotentiary to the Ottoman Porte, Iakov Ivanovich Bulgakov,] to [Empress] Catherine II (no. 37)
4000  Реляции Екатерине II (№ 37)
4060  32
4961  https://ditav.gbv.de/receive/lod_mods_00000763