Average Linkage Hierarchical Clustering Algorithm for Determining the Relationships between Elements in Coal by Na Xu, Robert B. Finkelman, Shifeng Dai, Chuanpeng Xu, Mengmeng Peng

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Determination of Chemical Speciation of Arsenic and Selenium in High-As Coal Combustion Ash by X‑ray Photoelectron Spectroscopy: Examples from a Kentucky Stoker Ash by Biao Fu, James C. Hower, Shifeng Dai, Sarah M. Mardon, Guijian Liu

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Mineral Matter in the Late Permian C1 Coal from Yunnan Province, China, with Emphasis on Its Origins and Modes of Occurrence by Xiao Li, Shifeng Dai, Victor P. Nechaev, Ian T. Graham, David French, Xibo Wang, Lei Zhao, Jingtao Zhao

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Petrology, Palynology, and Geochemistry of Gray Hawk Coal (Early Pennsylvanian, Langsettian) in Eastern Kentucky, USA by James C. Hower, Cortland F. Eble, Jennifer M. K. O'Keefe, Shifeng Dai, Peipei Wang, Panpan Xie, Jingjing Liu, Colin R. Ward, David French

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Metalliferous Coals of Cretaceous Age: A Review by Shifeng Dai, Sergey I. Arbuzov, Igor Yu. Chekryzhov, David French, Ian Feole, Bruce C. Folkedahl, Ian T. Graham, James C. Hower, Victor P. Nechaev, Nicola J. Wagner, Robert B. Finkelman

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