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Safety in High Blocks. Nature 218, 718 (1968). https://doi.org/10.1038/218718a0
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DOI: https://doi.org/10.1038/218718a0
Nature volume 218, page 718 (1968)
Safety in High Blocks. Nature 218, 718 (1968). https://doi.org/10.1038/218718a0
Issue Date:
DOI: https://doi.org/10.1038/218718a0