The Working class--vanguard of the world revolutionary movement / Institut mezhdunarodnogo rabochego dvizhenii︠a︡ (Akademii︠a︡ nauk SSSR) Communism. Working class. Proletariat. HX40 .W61513 335.43 WOR AT head of title: Academy of Sciences of the USSR. Institute of the International Working-Class Movement. Moscow : Novosti Press Agency Pub. House, 1971. 1971. 1971 Text 252 p. ; eng