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Registrar General's Quarterly Return for England and Wales. Nature 199, 539 (1963). https://doi.org/10.1038/199539e0
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DOI: https://doi.org/10.1038/199539e0
Nature volume 199, page 539 (1963)
Registrar General's Quarterly Return for England and Wales. Nature 199, 539 (1963). https://doi.org/10.1038/199539e0
Issue Date:
DOI: https://doi.org/10.1038/199539e0