Geographic Variation, Speciation, and Clines.
By John A. Endler. Pp. ix + 246. (Princeton University: Princeton, New Jersey, 1977.) Hardback £12: paperback £5.45.
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Lawton, J. Population differentiation and gene-flow. Nature 270, 765 (1977). https://doi.org/10.1038/270765b0
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DOI: https://doi.org/10.1038/270765b0