Hidde de Vries 16 March 2016/by Pierre Mathieu https://www.tedxdelft.nl/wp-content/uploads/2016/02/TEDxDelftLogoWebsite.jpg 0 0 Pierre Mathieu https://www.tedxdelft.nl/wp-content/uploads/2016/02/TEDxDelftLogoWebsite.jpg Pierre Mathieu2016-03-16 21:03:332016-03-16 21:03:45Hidde de Vries