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MAKOWER, C. National Coal Board Mining Research Establishment. Nature 207, 924–925 (1965). https://doi.org/10.1038/207924a0
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DOI: https://doi.org/10.1038/207924a0
Nature volume 207, pages 924–925 (1965)
MAKOWER, C. National Coal Board Mining Research Establishment. Nature 207, 924–925 (1965). https://doi.org/10.1038/207924a0
Issue Date:
DOI: https://doi.org/10.1038/207924a0