乐为支农出把力 Le wei zhinong chu ba li Designer Zhang Jinghua (张竞华) Zhujiajue Post and Telecommunications Office, Qingpu District (青浦县朱家角邮电局) Date 1977, October Publisher Shanghai renmin chubanshe (上海人民出版社) Size 76.5x52.5 cm. Call nr. BG E13/976 Collection Landsberger collection
