Petr Petrovich Troyanskii (January, 1894--24 May, 1950) was born in January 1894 in the family of a railway repair-shop worker in Orenburg in the Southern Urals.
Petr Petrovich Troyanskii (January, 1894--24 May, 1950) was a Russian educator and scholar. He was born in the family of a railway repair-shop worker in Orenburg in the Southern Urals.