Picture Link Source License Added
Image Silder - Public authorities  Home Frerk Meyer (Flickr) CC BY-SA 2.0 8. July 2013
Image Silder - Industry & SMEs Home Klaus Nahr (Flickr) CC BY-SA 2.0 4. June 2011
Image Silder - Standardisation bodies Home CoCreatr (Flickr) CC BY-SA 2.0 24. February 2010