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A. J. Berry. Nature 213, 556 (1967). https://doi.org/10.1038/213556c0
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DOI: https://doi.org/10.1038/213556c0
Nature volume 213, page 556 (1967)
A. J. Berry. Nature 213, 556 (1967). https://doi.org/10.1038/213556c0
Published:
Issue Date:
DOI: https://doi.org/10.1038/213556c0