Employment of Cheng Guanhuan, 1933–: 美國 Arizona 銅礦公司 (礦務工程師)
Occupation
: id 5702
Organisation
美國 Arizona 銅礦公司
Original occupation text
礦務工程師
Range - Start date
1933
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Cheng, Guanhuan 程關煥 (1905–)
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Added
2020-06-18 19:29:20 (
local)
Updated
2023-02-20 10:45:22 (
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