Concept
Version 9
Created by Boundless
The Exchange of Value
Source
Boundless vets and curates high-quality, openly licensed content from around the Internet. This particular resource used the following sources:
"All sizes | Value prop Comments | Flickr - Photo Sharing!."
http://www.flickr.com/photos/kristoferbjorkman/7438797868/sizes/m/in/photostream/
Flickr
CC BY.