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City and Guilds of London Institute. Nature 168, 544 (1951). https://doi.org/10.1038/168544a0
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DOI: https://doi.org/10.1038/168544a0
Nature volume 168, page 544 (1951)
City and Guilds of London Institute. Nature 168, 544 (1951). https://doi.org/10.1038/168544a0
Issue Date:
DOI: https://doi.org/10.1038/168544a0