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5 янв 1955 г. - |1955| Parnes and Osborn develop a new creative problem-solving model featuring five steps, instead of Osborn's previous that had seven.
Добавлено на ленту времени:
3 окт 2017
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Sidney Parnes
Дата:
5 янв 1955 г.
Сейчас
~ 69 г назад