English operator: Panoramio described at URL: https://web.archive.org/web/20161021090117/http://www.panoramio.com/photo/65674392...
English operator: Panoramio described at URL: https://web.archive.org/web/20161021072020/http://www.panoramio.com/photo/65674345...
English operator: Panoramio described at URL: https://web.archive.org/web/20161101142219/http://www.panoramio.com/photo/112869328...
English operator: Panoramio described at URL: https://web.archive.org/web/20161023225247/http://www.panoramio.com/photo/65674358...
English operator: Panoramio described at URL: https://web.archive.org/web/20161024032806/http://www.panoramio.com/photo/65674376...
English operator: Panoramio described at URL: https://web.archive.org/web/20161031081001/http://www.panoramio.com/photo/112603716...
English operator: Panoramio described at URL: https://web.archive.org/web/20161019160322/http://www.panoramio.com/photo/55412098...
English operator: Panoramio described at URL: https://web.archive.org/web/20161101184414/http://www.panoramio.com/photo/111835794 determination method...
English operator: Panoramio described at URL: https://web.archive.org/web/20161103035042/http://www.panoramio.com/photo/131930572...
English operator: Panoramio described at URL: https://web.archive.org/web/20161031162204/http://www.panoramio.com/photo/112101468...