Russian standards PDF
Low-power electronic tubes and valves. Method of measurements of plate resistance
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Tellurium of high purity. Method for determination of sulphur
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Sawn timber of coniferous and broad-leaved species. Drying conditions in batch chambers
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Image intensifier and image converter tube. Terms, definitions and letter symbols
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Test automated of technical condition of aviation technique articles. Terms and definitions
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Plastics. Methods for determination of refraction coefficient
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