Stamps of China, PRC, 23 Dec 1974
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postage
1974, Dec 23 Industrial Production issue unwmk
| - | 8f | multi | Water-cooled Generator | |||
| - | 8f | multi | Motorized rice sprouts transplanter | |||
| - | 8f | multi | Universal recylindrical grinding machine | |||
| - | 8f | multi | Open-air rock drill, p. 11.25x11 |
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