17. • Photo credits
• http://www.flickr.com/photos/34014216@N02/4984731162
rkphotography cc licence
• http://www.flickr.com/photos/48973657@N00/2040679862 See- Min
Lee, cc licence
• http://www.flickr.com/photos/83025347@N00/2606867311 Jim Rees,
cc licence
• http://www.flickr.com/photos/16638697@N00/386762837 Ed Schipul,
cc licence
• http://www.flickr.com/photos/48266396@N00/261126130 David Sim,
cc licence
• http://www.flickr.com/photos/22538182@N05/2917506266 Yashh, cc
licence
18. • http://www.flickr.com/photos/
95572727@N00/2366980580 Trey Ratcliff, cc
licence
• http://www.flickr.com/photos/
35034345972@N01/9303564321 Eddie Codel, cc
licence
• http://www.flickr.com/photos/
31246066@N04/4426637814 Ian Sane, cc licence
• http://www.flickr.com/photos/
18161271@N00/2117466878 shannonkringen, cc
licence