Russian standards PDF

Brown coals, hard coals and anthracite. Size classification

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Leather for shoe upper. Specifications

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Refractories and refractory raw materials. Methods for determination of general carbon

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Feldspar and quartz-feldspar materials for fine ceramics. Specifications

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Quartzy sand for fine ceramics. Specifications

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Bentonite clay for fine and building ceramics. Specifications

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