Coal stone oxidized in the Kuznetsk basin. Grouping by degree of oxidation
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Coal stone oxidized in the Kuznetsk basin. Groups by degree of oxidation
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Coal stone oxidized in the Kuznetsk basin. Classification
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Coals, stone oxidized of Kuznetsk and anthracite of the Gorlovsky basins. Classification
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Oxidized pit coals and anthracite of the kuznetsk basin and the gorlovsky basin. Classification
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Coals of the South Yakut basin. Classification
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Coals of the South Yakut basin. Classification
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Coals of the south-yakut wasin. Classification
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Coals of the south-yakut wasin. Classification
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Coals of the south-yakut wasin. Classification
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Wrown. Hard coals and anthracite of north-east regions. Classification
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Coals of Bylim from Kabardino-Balkaria. Brands, groups, classes by the size of pieces
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