Russian standards PDF

Chemical products of coking. Acceptance regulations and methods of sampling

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Sоils. Fiеld tеst mеthоds bу рilеs

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Coke nut. Specifications

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Refractory articles. Methods of damage depth measuring of angles and rihs

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Meating hot-water boilers with capacity to 100 kW. Specifications

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Limestone for glass industry. Specifications

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