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Concentrated natural chalk. Technical requirements
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Concentrated natural chalk. Specifications
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Concentrated natural chalk. Specifications
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Natural chalk, milled and in lumps
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Electrotechnical marble crumb
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Electrotechnical marble crumb. Specifications
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Chalk. Kinds, marks and general technical requirements
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Lampy limestone for glass industry. Specifications
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Raw materials for production of rubble from natural stone for construction works. Specification
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Hard rocks for crushed stone production for construction. Technical requirements and test methods
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Raw materials for crushed gravel, gravel and sand for construction. Technical requirements and test methods
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