98/01838 Biomass in clean coal productio
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Article
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1998
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Elsevier Science
⚖ 204 KB
partings have low concentrations of barium, hafnium, scandium, strontium, tantalum, thorium, uranium, and REEs; this along with the absence of an Eu negative anomaly suggests a non-volcanic origin for the partings. 98/01830 ## Understanding of the mechanism of coal transltion into a plastic state.