Yunyong kexue lilun tigao shengchan shuiping 运用科学理论提高生产水平 Designer Ma Lequn (马乐群) Date 1960, March Publisher Renmin meishu chubanshe (人民美术出版社) Size 76x54 cm. Call nr. BG E17/239 Collection IISH collection Theme Great Leap Forward (1958-1961) Tags China poster Chinese propaganda 1960 worker lathe man book diagram slide rule