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23 giug 1955 anni - |1955| Attends first-ever Creative Problem Solving Institute(CPSI), where he meets Alex Osborn.
Aggiunto al nastro di tempo:
Sidney Parnes
By
Dan Richardson
3 ott 2017
0
0
474
Data:
23 giug 1955 anni
Adesso
~ 68 years ago
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