Signed by the Authors
Submitted by Gijs Ockeloen on Friday, July 1, 2011
It took Paul Hekkert and Matthijs van Dijk 45 minutes to co-sign 150 copies of their brand new book ViP: A guidebook for innovators.
It took Paul Hekkert and Matthijs van Dijk 45 minutes to co-sign 150 copies of their brand new book ViP: A guidebook for innovators.
