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National Physical Laboratory : Dr. O. Simpson. Nature 200, 314 (1963). https://doi.org/10.1038/200314b0
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DOI: https://doi.org/10.1038/200314b0
Nature volume 200, page 314 (1963)
National Physical Laboratory : Dr. O. Simpson. Nature 200, 314 (1963). https://doi.org/10.1038/200314b0
Issue Date:
DOI: https://doi.org/10.1038/200314b0