Panoramio described at URL: https://web.archive.org/web/20161102212207/http://www.panoramio.com/photo/117351981 determination method or standard: SHA-1...
Panoramio described at URL: https://web.archive.org/web/20161102212243/http://www.panoramio.com/photo/117351983 determination method or standard: SHA-1...