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North of England Institute of Mining and Mechanical Engineers. Nature 170, 442 (1952). https://doi.org/10.1038/170442c0
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DOI: https://doi.org/10.1038/170442c0
Nature volume 170, page 442 (1952)
North of England Institute of Mining and Mechanical Engineers. Nature 170, 442 (1952). https://doi.org/10.1038/170442c0
Issue Date:
DOI: https://doi.org/10.1038/170442c0