Ralph Davis

<strong>Quelle:</strong> Scott Chernis/<a rel="nofollow" class="external text" href="https://www.flickr.com/photos/ucdaviscoe/">UC Davis College of Engineering</a> - <a rel="nofollow" class="external free" href="https://www.flickr.com/photos/ucdaviscoe/8098021605/">https://www.flickr.com/photos/ucdaviscoe/8098021605/</a>