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Manpower needs are not so easily estimated. Nature 253, 1 (1975). https://doi.org/10.1038/253001a0
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DOI: https://doi.org/10.1038/253001a0
Nature volume 253, page 1 (1975)
Manpower needs are not so easily estimated. Nature 253, 1 (1975). https://doi.org/10.1038/253001a0
Issue Date:
DOI: https://doi.org/10.1038/253001a0