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 (nos. 28–29)
4000  Реляции Екатерине II (№№ 28–29)
4060  10
4961  https://ditav.gbv.de/receive/lod_mods_00000761