China Micrographics--First GB Standards Search Result |
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GB/T 17292-2008 Micrographics - Requirement on the quality of first generation silver - gelatin microforms 缩微摄影技术 第一代银-明胶型缩微品的质量要求 - 中英文版 |
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GB/T 6160-2003 Micrographics--First generation silver-gelatin microforms of source documents--Density specifications and method of measurement 缩微摄影技术 源文件第一代银--明胶型缩微品密度规范与测量方法 - 中英文版 |
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