Stamps of China, PRC, 30 Dec 1957
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postage
1957, Dec 30 agricultural cooperation unwmk p. 14
| X | 8f | multi | old man&young drummer | |||
| X | 8f | multi | n2.plowman | |||
| - | 8f | multi | n3.planting tree | |||
| X | 8f | multi | n4.harvest |
1957, Dec 30 Yellow River control plan issue
| X | 4f | org | ||||
| - | 4f | bl | ||||
| X | 8f | dkrd | n3.liner on river | |||
| - | 8f | n4. | — | — |
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