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International Conference on Coal Science. Nature 176, 103–105 (1955). https://doi.org/10.1038/176103a0
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DOI: https://doi.org/10.1038/176103a0
Nature volume 176, pages 103–105 (1955)
International Conference on Coal Science. Nature 176, 103–105 (1955). https://doi.org/10.1038/176103a0
Issue Date:
DOI: https://doi.org/10.1038/176103a0