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Gas supply system. Main pipeline gas transportation. Environmental protection. Protection of the water environment. Water preparation. Technical requirements

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Activated carbons. Method for the determination of ash content

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Iron pellets. Method for the determination of compression strength

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Hard coals. Petrographic method for the determination of degree of preparation

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Bismuth concentrate. Atomic absorption method for determination of bismuth, lead and copper

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Essential Oils. Method of determination of the contents of alcohols

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