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Studies in Speleology. Nature 206, 987 (1965). https://doi.org/10.1038/206987c0
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DOI: https://doi.org/10.1038/206987c0
Nature volume 206, page 987 (1965)
Studies in Speleology. Nature 206, 987 (1965). https://doi.org/10.1038/206987c0
Issue Date:
DOI: https://doi.org/10.1038/206987c0