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12 magg 1955 anni - B. F. Skinner's Improved Teaching Machine
Descrizione:
B. F. Skinner of Harvard University files a patent for an improved teaching machine.
Aggiunto al nastro di tempo:
Timeline of IDT History
By
Christian
12 gen 2020
0
0
220
Data:
12 magg 1955 anni
Adesso
~ 69 years ago
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