Abstract
DETAILED research into the composition of coal demonstrates its intricacy. There can be no true understanding of this complicated and important substance if the results of research are confused by the use in varying senses of descriptive terms.
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References
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STOPES, M. Composition of Coal. Nature 154, 56 (1944). https://doi.org/10.1038/154056a0
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DOI: https://doi.org/10.1038/154056a0
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