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Modern Methods of Traffic Control. Nature 191, 1044 (1961). https://doi.org/10.1038/1911044c0
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DOI: https://doi.org/10.1038/1911044c0
Nature volume 191, page 1044 (1961)
Modern Methods of Traffic Control. Nature 191, 1044 (1961). https://doi.org/10.1038/1911044c0
Issue Date:
DOI: https://doi.org/10.1038/1911044c0