Progress i istorii︠a︡ // [Progress and History] A. D Sukhov 1983 2 substantive philosophy of history progress/decline
Sot︠s︡ialʹnyĭ progress i svoboda: k analizu teoreticheskikh istokov krizisa burzhuaznogo soznanii︠a︡ // [Social Progress and Freedom] L. V Skvortsov 1979 2 substantive philosophy of history freedom/liberty progress/decline