(untitled) - Bobrovʺ, Semenʺ Sergi︠e︡evichʺ, 1767-1810; Bobrovʺ, Semenʺ Sergi︠e︡evichʺ, 1767-1810; Bobrovʺ, Semenʺ Sergi︠e︡evichʺ, 1767-1810