- Author: Communist International. 2nd Congress Petrograd and Moscow 1920
- Language: English
- Year: 1920
- Author: Communist International, R. A. Archer
- Language: English
- Year: 1977
- Author: Communist International, Jane Tabrisky Degras
- Language: English
- Author: Communist International., Høgsbjerg Christian, James Cyril Lionel Robert
- Language: English
- Year: 2017
![book Toward the united front: proceedings of the Fourth Congress of the Communist International, [Petrograd], 1922](/covers/files_170/2581000/b19638553285bf301c578706b9e02502-g.jpg)
- Author: Communist International
- Language: English
- Year: 1929