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Moulding sands and sand mixtures. Methods for determination of granulometric composition, fineness modulus and average size of
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Linen, semilinen and cotton textiles. Methods for the determination of cellulose solution viscosity
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Occupational safety standards system. Personal protective means of hear body. General requirements. Part 8. Entertainment audio earmuffs
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Energy conservation. Methods of assurance for energy efficiency indicators of energy consumed products to its normative values. General requirements
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