Introduction from Historical Materialism: A System of Sociology by Nikolai Bukharin
Channel: Adrestia's Revolt
Date: 2019-09-15

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/intro.htm?fbclid=IwAR3e8bkNTnM4Z0X2jfe9a-iZdirANKcz_frOZ6Z2cKhXn27pMQHHH5VQcVA