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State system for ensuring the traceability of measurements. Gas analyzers and gas alarm devices for determination of combustible gases and vapors in working zone air. Verification procedure
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Seamless and welded steel tubes. Part 6. Radiographic testing for the detection of imperfections of the weld seam
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Quality management systems in the machine tool industry. Management methods
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Juice products. Photometric method for determination of pectin content
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Civil defence. Engineering and technical equipment of civil defence constructions. Protective-hermetic and hermetic doors, gates and shutters for shelters. General technical requirements and control methods
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