Chapter 4 from Historical Materialism: A System of Sociology by Nikolai Bukharin
Channel: Adrestia's Revolt
Date: 2019-09-17

Playlist for the whole book is here:  https://www.youtube.com/watch?v=sr7o64hezwc&list=PLN7ozVvUylo8Eei8dUMD436038wjQhgP-

Full text: https://www.marxists.org/archive/bukharin/works/1921/histmat/4.htm?fbclid=IwAR1Ogk12D-BYmKGGJxae0HkK04EEdK9A3ytjfVjnaEoXx3JpiuP3xoTstso