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| International Standard Category: Landscaping and silviculture |
DB21/T 2728-2017 Drawing specification for operational design for degraded shelter forest restoration
退化人工防护林修复作业设计编制规范 ;
| Category No.: | 65.020.40 | Valid Status: | valid |
| Issued Organization: | Liaoning Provnicial Quality and Technology Supervision Bureau | Issued Date: | 2017-02-23 |
| Implemented Date: | 2017-3-23 | Abolished Date: | |
| Superseded Standard.: | Superseded Date: |
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