Earth Sciences Research JournalPrint version ISSN 1794-6190
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HE, Yunlan et al. Coal Seam Roof: Lithology and Influence on the Enrichment of Coalbed Methane. Earth Sci. Res. J. [online]. 2019, vol.23, n.4, pp.359-364. Epub Apr 20, 2020. ISSN 1794-6190.