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Iron ores, concentrates, agglomerates and pellets. Method of determination of metallic iron content
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Automobile roads of general use. Classification of tunnels
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Thread connections for casing, tubing, line pipe and thread gauges for them. General technical requirements
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Copper and complex ores, and products of their processing. Methods for weight fraction measurement of copper in mineral forms
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Motor oils for autotractor. General technical requirements
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