Panoramio described at URL: https://web.archive.org/web/20161024140850/http://www.panoramio.com/photo/73164942 determination method or standard: SHA-1...
Panoramio described at URL: https://web.archive.org/web/20161013183934/http://www.panoramio.com/photo/29648861 determination method or standard: SHA-1...