Title: Workers of the world and oppressed peoples, unite!
Subjects: Communist International, Congresses, Politics - Current Events, Politics / Current Events, Politics/International Relations, Political Process - Elections, Inter-war period, 1918-1939, Marxism & Communism, Revolutions & coups, Russia, Social groups & communities, History, Sources, Communist International. Congress 1920 : Saint Petersburg, Russia; Moscow, Russia)