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Expectation of Life in the United States. Nature 192, 515 (1961). https://doi.org/10.1038/192515a0
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DOI: https://doi.org/10.1038/192515a0
Nature volume 192, page 515 (1961)
Expectation of Life in the United States. Nature 192, 515 (1961). https://doi.org/10.1038/192515a0
Issue Date:
DOI: https://doi.org/10.1038/192515a0