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

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Essential Oils. Method of determination of the contents of alcohols

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Reagents. Barium chloride 2-aqueous. Specifications

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Casing and tubing steel pipes for the oil and gas industry. Procedures of thread connection testing

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Reagents. Ammonium phosphate dibasic. Specifications

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Ion-exchange resins. Preparation of specimens for tests

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