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Hard coals and anthracites (medium and high rank coals). Codification
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Brown coals, hard coals and anthracites. Product quality index system
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Brown coals, hard coals and anthracites. Classification according to genetic and technological parameters
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Solid mineral fuel. Methods for the determination of content of the carbon dioxide of carbonates
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Solid mineral fuel. Infrared thermogravimetric method for determination of total moisture
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