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5 Jan 1955 Jahr - |1955| Parnes and Osborn develop a new creative problem-solving model featuring five steps, instead of Osborn's previous that had seven.

Zugefügt zum Band der Zeit:

3 Okt 2017
0
0
449
Sidney Parnes

Datum:

5 Jan 1955 Jahr
Jetzt
~ 69 years ago
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