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Institution of Mining Engineers. Nature 166, 937 (1950). https://doi.org/10.1038/166937b0
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DOI: https://doi.org/10.1038/166937b0
Nature volume 166, page 937 (1950)
Institution of Mining Engineers. Nature 166, 937 (1950). https://doi.org/10.1038/166937b0
Issue Date:
DOI: https://doi.org/10.1038/166937b0