1. Philatelic 72/80/150 Reference (shelfmark): Philatelic 72/80/150 Title: Japan Postage Stamp Issue: Reaching of Critical Mass by Joyo Fast Breeder Reactor, Oarai Town Scope & Content: Photogravure printed stamp designed by H. Otsuka. Collection Area: Philatelic Collections Languages: English Date Range: 6 Jun 1977 Extent: 1 Item