Panoramio described at URL: https://web.archive.org/web/20161101134628/http://www.panoramio.com/photo/118517431 determination method or standard: SHA-1...
Panoramio described at URL: https://web.archive.org/web/20161101120525/http://www.panoramio.com/photo/118517423 determination method or standard: SHA-1...
Panoramio described at URL: https://web.archive.org/web/20161030124007/http://www.panoramio.com/photo/105946229 determination method or standard: SHA-1...