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Standard Insuued on: 2011-04 |
Category No.: | DB | Valid Status: | superseded |
Issued Organization: | BJTSB | Issued Date: | 2011-04-28 |
Implemented Date: | 2011-8-1 | Abolished Date: | |
Superseded Standard.: | DB11/T 779-2022 |
Superseded Date: | 2023-4-1 |
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