为实四个现代化而勤奋学习 Wei shixian sige xiandaihua er qinfen xuexi Designer Sun Jihai (孙继海) Date 1978, February Publisher Shanghai jiaoyu chubanshe (上海教育出版社) Size 53x77 cm. Call nr. BG E39/443 Collection IISH collection Link to IISH catalog https://search.iisg.amsterdam/Record/1286150
