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Social and Sample Surveys for Planning and Economic Policies. Nature 166, 390 (1950). https://doi.org/10.1038/166390a0
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DOI: https://doi.org/10.1038/166390a0
Nature volume 166, page 390 (1950)
Social and Sample Surveys for Planning and Economic Policies. Nature 166, 390 (1950). https://doi.org/10.1038/166390a0
Issue Date:
DOI: https://doi.org/10.1038/166390a0