Causation of Mental Deficiency

The Biology of Mental Defect

By Dr. Lionel S. Penrose. Pp. xiv + 285 + 7 plates. (London: Sidgwick and Jackson, Ltd., 1949.) 21s. net.

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ALLEN, C. Causation of Mental Deficiency. Nature 165, 661 (1950). https://doi.org/10.1038/165661a0

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