Can Socialists and Communists co-operate? / [by] Ernst Henry ; [translated from the Russian] Mogut li kommunisty i sot︠s︡ialisty idti vmeste? English Genri, Ėrnst, 1904-1990. Socialist parties History. Communist parties History. HX40 .H3713 335.5 HEC Includes bibliographical references. Moscow : Progress Publishers, 1972. 1972. 1972 Text 234 p. ; eng eng rus