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Productivity by numbers. Nature 292, 665 (1981). https://doi.org/10.1038/292665b0
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DOI: https://doi.org/10.1038/292665b0
Nature volume 292, page 665 (1981)
Productivity by numbers. Nature 292, 665 (1981). https://doi.org/10.1038/292665b0
Issue Date:
DOI: https://doi.org/10.1038/292665b0