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Keyword [Coal petrography]
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1. The Coal Geochemical Characteristics Of No.12 Coal In Wumuchang Mine,Yimin Coalfield
2. Study On The Coal Lithology And Coal Quality Features And Its Forming Environment Of The Mid-Lower Jurassic Coal Seam In Korjay Sunken,Turpan-Hami Basin
3. Coal Reservoir Physical Properties And Its Control Mechanism Of Coal Petrography In Hancheng Area
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