DB11/T 1322.89-2019 Part 89 of the Technical Specifications for the Assessment of Safety Production Levels: Civil Air Defense Projects and Common Basements (English Version)
Beijing Provincial Standard of the People's Republic of China
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DB11/T 1322.89-2019
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2019DB11/T 1322.89-2019 Part 89 of the Technical Specifications for the Assessment of Safety Production Levels: Civil Air Defense Projects and Common Basements