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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.
Preliminary report of the Committee of the Eugenic Section of the American Breeders' Association to study and to report on the best practical means for cutting off the defective germ-plasm in the human population.
- American Breeders Association. Eugenics Section. Committee on Sterilization and Other Means of Eliminating Defective Germ-plasm.