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NC 44-39-1985 Ores Sedimentary Rocks Lithological Symbols《矿石 沉积岩结石逻辑符号》.pdf 7

NC 44-39-1985 Ores Sedimentary Rocks Lithological Symbols《矿石 沉积岩结石逻辑符号》.pdfNC 44-39-1985 Ores Sedimentary Rocks Lithological Symbols《矿石 沉积岩结石逻辑符号》.pdf

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NC 44-36-1985 Ores Useful Solid Ores Geological Prospecting Térras and Definitions《矿石 有用的固体矿石地质勘测术语和定义》.pdf 11

NC 44-36-1985 Ores Useful Solid Ores Geological Prospecting Térras and Definitions《矿石 有用的固体矿石地质勘测术语和定义》.pdfNC 44-36-1985 Ores Useful Solid Ores Geological Prospecting Térras and Definitions《矿石 有用的固体矿石地质勘测术语和定义》.pdf

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NC 39-17-6-1986 National System for Scientific and Technical Information Microforms Requirements for Its Elaboration《国家科学技术信息系统 微软系统 它的详细说明要求》.pdf 8

NC 39-17-6-1986 National System for Scientific and Technical Information Microforms Requirements for Its Elaboration《国家科学技术信息系统 微软系统 它的详细说明要求》.pdfNC 39-17-6-1986 National System for Scientific and Technical Information Microforms Requirements for Its Elaboration《国家科学技术信息系统 微软系统 它的详细说明要求》.pdf

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NC 39-17-5-1985 National System for Scientific and Technical Information Microforms Envelope for Microfiches General Requirements《国家科学技术信息系统 微软系统 单片缩影胶片的包装 一般要求》.pdf 4

NC 39-17-5-1985 National System for Scientific and Technical Information Microforms Envelope for Microfiches General Requirements《国家科学技术信息系统 微软系统 单片缩影胶片的包装 一般要求》.pdfNC 39-17-5-1985 National System for Scientific and Technical Information Microforms Envelope for Microfiches General Requirements《国家科学技术信息系统 微软系统 单片缩影胶片的包装 一般要求》.pdf

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NC 39-17-4-1985 National System for Scientific and Technical Information Microforms Microfilms and Microfiches Handling Storage and Conservation《国家科学技术信息系统 微型微缩胶片和单片缩影胶片 处理，贮藏和保存》.pdf 4

NC 39-17-4-1985 National System for Scientific and Technical Information Microforms Microfilms and Microfiches Handling Storage and Conservation《国家科学技术信息系统 微型微缩胶片和单片缩影胶片 处理，贮藏和保存》.pdfNC 39-17-4-1985 National System for Scientific and Technical Information Microforms Microfilms and Microfiches Handling Storage and Conservation《国家科学技术信息系统 微型微缩胶片和单片缩影胶片 处理，贮藏和保存》.pdf

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NC 39-17-3-1985 National System for Scientific and Technical Information Micfoforms Legibility Limit Definition《国家科学技术信息系统 微型易读性限制定义》.pdf 8

NC 39-17-3-1985 National System for Scientific and Technical Information Micfoforms Legibility Limit Definition《国家科学技术信息系统 微型易读性限制定义》.pdfNC 39-17-3-1985 National System for Scientific and Technical Information Micfoforms Legibility Limit Definition《国家科学技术信息系统 微型易读性限制定义》.pdf

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NC 39-17-2-1984 National System of Soientific and Technical Information Mioroforms Main Types and Dimensions《国家科学技术信息系统 微型主要类型和尺寸》.pdf 4

NC 39-17-2-1984 National System of Soientific and Technical Information Mioroforms Main Types and Dimensions《国家科学技术信息系统 微型主要类型和尺寸》.pdfNC 39-17-2-1984 National System of Soientific and Technical Information Mioroforms Main Types and Dimensions《国家科学技术信息系统 微型主要类型和尺寸》.pdf

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NC 29-04-1985 Plague Killers Registration of Plague Killers Procedure《瘟疫 瘟疫注册程序》.pdf 10

NC 29-04-1985 Plague Killers Registration of Plague Killers Procedure《瘟疫 瘟疫注册程序》.pdfNC 29-04-1985 Plague Killers Registration of Plague Killers Procedure《瘟疫 瘟疫注册程序》.pdf

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NC 28-08-1987 Fertilxzers Mixed Granulated and Complex Fertilizers Determination of Total Nitrogen Assimilable Phosphorus and Potassium by the Weighing Method《肥料 混合的 颗粒状的复合肥料 总氮含量测.pdf 20

NC 28-08-1987 Fertilxzers Mixed Granulated and Complex Fertilizers Determination of Total Nitrogen Assimilable Phosphorus and Potassium by the Weighing Method《肥料 混合的 颗粒状的复合肥料 总氮含量测.pdfNC 28-08-1987 Fertilxzers Mixed Granulated and Complex Fertilizers Determination of Total Nitrogen Assimilable Phosphorus and Potassium by the Weighing Method《肥料 混合的 颗粒状的复合肥料 总氮含量测.pdf

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NC 28-07-1986 Fertilizers Raw Material and Finished Products Sampling Method《肥料 原材料和成品 抽样方法》.pdf 7

NC 28-07-1986 Fertilizers Raw Material and Finished Products Sampling Method《肥料 原材料和成品 抽样方法》.pdfNC 28-07-1986 Fertilizers Raw Material and Finished Products Sampling Method《肥料 原材料和成品 抽样方法》.pdf

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