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Flotational Enrichment of the Semidull Lithotype of Coking Coal
Semenova S.A., Patrakov Y.F., Kharlampenkova J.A., Klein M.S.
Structural Aspects of the Coalification of Organic Materials
Dmitrienko A.A., Isayeva E.R.
Characteristics of Mongolian coal
Masgutov I.I., Strakhov V.M., Surovtseva I.V.
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