必须戴好安全帽 Bixu daihao anquan mao Designer Weng Yizhi (翁逸之) Date 1981, February Publisher Shanghai renmin meishu chubanshe (上海人民美术出版社) Size 77x53 cm. Call nr. BG E37/543 Collection Landsberger collection Notes This poster is from the third impression (April 1984), published in 112,000 copies. Link to IISH catalog https://search.iisg.amsterdam/Record/1490329
