Reaching of Critical Mass by Joyo Fast-Breeder Reactor, Oarai Town 1977
现在展示： 日本 - （通用）邮票 - 1977 - Reaching of Critical Mass by Joyo Fast-Breeder Reactor, Oarai Town - 1 邮票.
现在展示： 日本 - （通用）邮票 - 1977 - Reaching of Critical Mass by Joyo Fast-Breeder Reactor, Oarai Town - 1 邮票.
![[Reaching of Critical Mass by Joyo Fast-Breeder Reactor, Oarai Town, 类型 BFC]](https://www.stampworld.com/media/catalogue/Japan/Postage-stamps/BFC-s.jpg)
