1 янв 1947 г. - Clark Doll Experiment

Описание:

https://www.nytimes.com/2014/05/07/upshot/how-an-experiment-with-dolls-helped-lead-to-school-integration.html

https://www.history.com/news/brown-v-board-of-education-doll-experiment

https://i2.cdn.turner.com/cnn/2010/images/05/13/doll.study.1947.pdf

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