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GOST R 53491.2-2012
Pools. Treatment of water. Part 2. Safety requirements
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€10
GOST 9717.3-2018
Copper. Method of spectral analysis by oxide standard specimens
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€10
GOST R 72264-2025
Resources saving. Waste treatment. Solid recovered fuels. Determination of ash content
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€25
GOST R 51361-99
Closed-circuit dry-cleaning machines. Test methods
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€10