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Petroleum and natural gas industries. Drilling and production equipment. Inspection, maintenance, repair and remanufacture of hoisting equipment. General technical requirements

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Brown coals. Method for determination of petrographic composition

Document status: Withdrawn

Hard coals. Method for the determination of washability

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Reagents. Zinc nitrate 6-aqueous. Specifications

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Turf. Methods of sampling from deposit and preparation of samples for laboratory tests

Document status: Active

Tungsten concentrate. Specifications

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