English operator: Panoramio described at URL: https://web.archive.org/web/20161022142334/http://www.panoramio.com/photo/52582789...
English operator: Panoramio described at URL: https://web.archive.org/web/20161025080816/http://www.panoramio.com/photo/80519365...
English operator: Panoramio described at URL: https://web.archive.org/web/20161103124538/http://www.panoramio.com/photo/131619755...
English operator: Panoramio described at URL: https://web.archive.org/web/20161027030008/http://www.panoramio.com/photo/86984881...
English operator: Panoramio described at URL: https://web.archive.org/web/20161019181056/http://www.panoramio.com/photo/52582688...
English operator: Panoramio described at URL: https://web.archive.org/web/20161021053952/http://www.panoramio.com/photo/52883749...
English operator: Panoramio described at URL: https://web.archive.org/web/20161023215107/http://www.panoramio.com/photo/52582772...
English operator: Panoramio described at URL: https://web.archive.org/web/20161031151137/http://www.panoramio.com/photo/99766583...
English operator: Panoramio described at URL: https://web.archive.org/web/20161025092857/http://www.panoramio.com/photo/86984979...
English operator: Panoramio described at URL: https://web.archive.org/web/20161024184944/http://www.panoramio.com/photo/80943768 determination method...