Russian standards PDF
Lanthanum, cerium, ytterbium, lutecium, yttrium and their oxides. Chemical-spectral method of determination of impurities in oxides of rare earth elements
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Wood chemical products. Methods for determination of the softening temperature
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Selenium photocells for photometric and colorimetric measurement of pyrotechnical agents. General technical requirements
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Cleaned kaolin. Method for the determination of dispersion
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Metal chromium. Sampling and sample preparation for chemical and physical-chemical analysis
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System of technical documentation for computer control systems. Registration, storage and access
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