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Mining History of Greenland (Greenland)
Mining Development issue of China, PRC
Short desc: Mining Development
Issuer:
China, PRC
Date: 12/29/1978
Consists of 4 stamps:
(See stamps as list)
4f d=Old Tibetan peasant reporting to surveyor
8f d=Tunneling
10f d=Opencast mining
20f d=Coal transport
All are perf=11x11.25