Literature
KAPLUN, Labour Protection and its Methods. MALYUTIN, On the Road to the bright Future of Communism. HELFER, The proletarian Revolution and the social Welfare of the Workers. PRESS, What is social Technique? articles in “Vestnik Truda” [The Labour Herald] and in the publications of the Commissariat for Social Welfare. HOLZMANN, The Premium System in the metallurgical Industry.