Photo Credits :

Front: © claudiaveja (fotolia) / p4: © ITPUG / p6 : © wiccked (Flickr)¹ / p8: © MagnusHagander / p11: © ThomasVondra (Flickr) / p12: © geekandpoke.com / p16: © andrechinn (Flickr)² / p17: © ilovememphis (Flickr)³ / p18: © DanBrady (Flickr)² / p19: © boklm (Flickr)² / p20: © / p21: © CarbonNYC (Flickr)² / p22: / p23: © SmSm (Flickr)² / p24: / p 25: © QUOI Media Group (Flickr)⁴ / p26: © DMM Photography Art (fotolia) / p27: © remik44992 (fotolia) / p30: © droolcup (Flickr)⁵ / p32-34 : © SimonMerrick

¹ : Creative Commons BY-NC-SA ² : Creative Commons BY ³ : Creative Commons BY-ND ⁴ : Creative Commons BY-SA ⁵ : Creative Commons BY-NC