DescriptionStevenLevitt, 2012.jpg English: Steve Levitt presents Freakonomics at Dell World 2012 Date 13 December 2012, 05:19:09 Source https://www.flickr
URL: https://www.flickr.com/people/sfoskett/ publication date: 13 December 2012 operator: Flickr described at URL: https://www.flickr.com/photos/sfoskett/8271116070