Stamps of China, PRC, 29 Dec 1978
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postage
1978, Dec 29 Mining Development issue unwmk p. 11x11.25
| - | 4f | multi | Old Tibetan peasant reporting to surveyor | |||
| - | 8f | multi | Tunneling | |||
| - | 10f | multi | Opencast mining | |||
| - | 20f | multi | Coal transport |
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