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Progress of Nations. Nature 218, 1199 (1968). https://doi.org/10.1038/2181199a0
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DOI: https://doi.org/10.1038/2181199a0
Nature volume 218, page 1199 (1968)
Progress of Nations. Nature 218, 1199 (1968). https://doi.org/10.1038/2181199a0
Issue Date:
DOI: https://doi.org/10.1038/2181199a0