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The second International Exhibition of Eugenics held September 22 to October 22, 1921, in connection with the Second International Congress of Eugenics in the American Museum of Natural History, New York : an account of the organization of the exhibition, the classification of the exhibits, the list of exhibitors, and a catalog and description of the exhibits
- Laughlin, Harry Hamilton, 1880-1943.
Intermarriage ; or, The natural laws by which beauty, health and intellect, result from certain unions, and deformity, disease and insanity, from others : with delineations of the structure and forms, and descriptions of the functions and capacities, which each parent in every pair, bestows on children, and an acount of corresponding effects in the breeding of animals
- Walker, Alexander, 1779-1852.