Systems of Frequency Curves
By William Palin Elderton and Norman Lloyd Johnson. Pp. 216. (Cambridge University Press: London, June 1969.) 60s; $10.
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WELCH, B. Curve Systems. Nature 224, 825 (1969). https://doi.org/10.1038/224825b0
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DOI: https://doi.org/10.1038/224825b0