Twins and orphans : the inheritance of intelligence / by Alex. H. Wingfield.
- Wingfield, Alexander H. (Alexander Hamilton)
- Date:
- 1928
Licence: Attribution-NonCommercial 4.0 International (CC BY-NC 4.0)
Credit: Twins and orphans : the inheritance of intelligence / by Alex. H. Wingfield. Source: Wellcome Collection.
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