1. Philatelic 72/22/1/119 Reference (shelfmark): Philatelic 72/22/1/119 Title: The People's Republic of China Postage Stamp Issue: Second National Conference of Chinese Scientific and Technical Association Scope & Content: Stamps designed by Li Dawei. Manufactured by the Beijing Postage Stamp Printing Works using a photogravure printing process. Collection Area: Philatelic Collections Languages: English Date Range: 15 Mar 1980 Extent: 1 Item