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The Mathematical Association. Nature 181, 1107 (1958). https://doi.org/10.1038/1811107b0
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DOI: https://doi.org/10.1038/1811107b0
Nature volume 181, page 1107 (1958)
The Mathematical Association. Nature 181, 1107 (1958). https://doi.org/10.1038/1811107b0
Issue Date:
DOI: https://doi.org/10.1038/1811107b0