Twins and Twin Relations
By Helen L. Koch. Pp. xvi + 302. (Chicago and London: The University of Chicago Press, 1966.) $6.95; 52s.
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MITTLER, P. Company of Two. Nature 214, 1372 (1967). https://doi.org/10.1038/2141372a0
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DOI: https://doi.org/10.1038/2141372a0