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29 agos 1952 anni - 1952年8月29日华东工业部举行奖励创造发明和合理化建议大会。

Descrizione:

1952年8月29日华东工业部举行奖励创造发明和合理化建议大会。

Aggiunto al nastro di tempo:

工业大事年表

2 set 2023

1

0

686

Data:

29 agos 1952 anni

Adesso

~ 73 years ago

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