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Rich, V. Grey marks from US group. Nature 340, 177 (1989). https://doi.org/10.1038/340177b0
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DOI: https://doi.org/10.1038/340177b0
Nature volume 340, page 177 (1989)
Rich, V. Grey marks from US group. Nature 340, 177 (1989). https://doi.org/10.1038/340177b0
Issue Date:
DOI: https://doi.org/10.1038/340177b0