警报信号与警报器材 Jingbao xinhao yu jingbao qicai Designer Designer unknown (佚名) Date ca. 1971 Publisher Beijingshi renmin fangkong zhihuibu (北京市人民防空指挥部) Size 53x76 cm. Call nr. BG E35/683 Collection IISH collection Theme People's air defense common knowledge posters (ca. 1971) After the Attack (1971) Tags China poster Chinese propaganda 1971 siren radio bell train gong alarm civil defense microphone PA system
