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Standard Insuued on: 1988-05 |
Category No.: | GB | Valid Status: | superseded |
Issued Organization: | Issued Date: | 1988-05-31 | |
Implemented Date: | 1989-1-1 | Abolished Date: | |
Superseded Standard.: | TB/T 3172-2007 Preservatively-treated Sleeper |
Superseded Date: | 2007-8-20 |
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