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Political and Economic Planning. Nature 195, 858 (1962). https://doi.org/10.1038/195858d0
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DOI: https://doi.org/10.1038/195858d0
Nature volume 195, page 858 (1962)
Political and Economic Planning. Nature 195, 858 (1962). https://doi.org/10.1038/195858d0
Issue Date:
DOI: https://doi.org/10.1038/195858d0