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State system for ensuring the uniformity of measurements. Photovoltaic devices. Part 3. Measurement principles of photovoltaic devices characteristics with terrestrial reference spectral irradiance data
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Plastics. General requirements for the manufacture of test specimens by mechanical processing
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Unified system of corrosion and ageing protection. Means of temporary corrosion protection. Method of determining protection ability of lubricants against fretting corrosion
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Fertilizers. Spectrophotometric determination of biuret in urea
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Plain bearings. Hardness testing of bearing metals. Solid materials
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