Reaching of Critical Mass by Joyo Fast-Breeder Reactor, Oarai Town 1977
Now showing: Japan - Postage stamps - 1977 - Reaching of Critical Mass by Joyo Fast-Breeder Reactor, Oarai Town - 1 stamps.
1977
Reaching of Critical Mass by Joyo Fast-Breeder Reactor, Oarai Town
6. June WM: None Perforation: 13½
![[Reaching of Critical Mass by Joyo Fast-Breeder Reactor, Oarai Town, type BFC]](https://www.stampworld.com/media/catalogue/Japan/Postage-stamps/BFC-s.jpg)
