Panoramio described at URL: https://web.archive.org/web/20161027052231/http://www.panoramio.com/photo/85527484 determination method or standard: SHA-1...
Panoramio described at URL: https://web.archive.org/web/20161025151614/http://www.panoramio.com/photo/85527653 determination method or standard: SHA-1...
Panoramio described at URL: https://web.archive.org/web/20161119004149/http://www.panoramio.com/photo/37379208 determination method or standard: SHA-1...