U.N. Conference on the Human Environment, Stockholm 1972
Now showing: Pakistan - Postage stamps - 1972 - U.N. Conference on the Human Environment, Stockholm - 1 stamps.
Now showing: Pakistan - Postage stamps - 1972 - U.N. Conference on the Human Environment, Stockholm - 1 stamps.
![[U.N. Conference on the Human Environment, Stockholm, type HF]](https://www.stampworld.com/media/catalogue/Pakistan/Postage-stamps/HF-s.jpg)
