R.V. Oech

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A Whack on the Side of the Head: How you can be mor …

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Kick In The Seat Of The Pants

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Creative Whack Pack Set

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Expect the Unexpected or You Won't Find It: A Creat …

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Roger von Oech's Ball of Whacks: A Creativity Tool …

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Innovative Whack Pack

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Roger Von Oech's Ancient Whacks of Heraclitus: A Cr …