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Invention: Something for Everybody. Nature 221, 209–210 (1969). https://doi.org/10.1038/221209b0
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DOI: https://doi.org/10.1038/221209b0
Nature volume 221, pages 209–210 (1969)
Invention: Something for Everybody. Nature 221, 209–210 (1969). https://doi.org/10.1038/221209b0
Issue Date:
DOI: https://doi.org/10.1038/221209b0