// todo need optimize like in event.jsp. Add indexing or not indexing this page. B.F. Skinner (1904-1990) introduced the concept of reinforcement. (1 janv. 1904 – 1 janv. 1990) (La bande de temps)
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B.F. Skinner (1904-1990) introduced the concept of reinforcement. (1 janv. 1904 – 1 janv. 1990)

Ajouté au bande de temps:

Lesson 2 - Angel Hernandez

ByAngel Hernandez
3 août 2018

Date:

1 janv. 1904
1 janv. 1990
~ 86 years
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