Safe counsel, or, Practical eugenics / by B.G. Jefferis and J.L. Nichols ; edited and completely revised by J.L. Nichols.

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Safe counsel, or, Practical eugenics / by B.G. Jefferis and J.L. Nichols ; edited and completely revised by J.L. Nichols. Attribution-NonCommercial 4.0 International (CC BY-NC 4.0). Source: Wellcome Collection.