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Mr C. R. Barber. Nature 231, 66–67 (1971). https://doi.org/10.1038/231066d0
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DOI: https://doi.org/10.1038/231066d0
Nature volume 231, pages 66–67 (1971)
Mr C. R. Barber. Nature 231, 66–67 (1971). https://doi.org/10.1038/231066d0
Issue Date:
DOI: https://doi.org/10.1038/231066d0