DB52-T 1672.1-2022 稻渔综合种养技术规程 第1部分:田间工程 贵州省
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ISO IEC 15896 1999 Information technology — Data interchange on 12,7 mm 208-track magnetic tape cartridges — DLT 5 format.pdf
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ISO 11618 2015 Buildings and Civil Engineering Works — Sealants — Classification and requirements for pedestrian walkway sealants.pdf
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GB-T 15457-1995 胶片与片基润滑度测定方法.pdf
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