1. Philatelic 72/22/1/8 Reference (shelfmark): Philatelic 72/22/1/8 Title: The People's Republic of China Postage Stamp Issue: International Working Women's Day Scope & Content: Stamps designed by Zhang Yuan and Yang Baizi. Manufactured by the Beijing Postage Stamp Printing Works using a photogravure printing process. Collection Area: Philatelic Collections Languages: English Date Range: 8 Mar 1973 Extent: 3 Items