Facts on Deaths from cancer in Massachusetts
B. F. Skinner
Was an American psychologist, philosopher, scientists and poet known for inventing the operant condition chamber and for his own experimental analysis of behavior.
10 facts about B. F. Skinner
Was a popular Hollywood actor who hailed from Mexico.
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Henrietta Swan Leavitt
An American female astronomer.
10 facts about Henrietta Swan Leavitt