English operator: Panoramio described at URL: https://web.archive.org/web/20161027071345/http://www.panoramio.com/photo/89027092...
English operator: Panoramio described at URL: https://web.archive.org/web/20161028121808/http://www.panoramio.com/photo/99712063...
English operator: Panoramio described at URL: https://web.archive.org/web/20161101015239/http://www.panoramio.com/photo/119171390...
English operator: Panoramio described at URL: https://web.archive.org/web/20161019202548/http://www.panoramio.com/photo/50364970 determination method...
English operator: Panoramio described at URL: https://web.archive.org/web/20161031002915/http://www.panoramio.com/photo/117710703...
English operator: Panoramio described at URL: https://web.archive.org/web/20161029044143/http://www.panoramio.com/photo/105213917 determination method...
English operator: Panoramio described at URL: https://web.archive.org/web/20161029094952/http://www.panoramio.com/photo/99713286...
English operator: Panoramio described at URL: https://web.archive.org/web/20161030002515/http://www.panoramio.com/photo/100899656...
English operator: Panoramio described at URL: https://web.archive.org/web/20161101210502/http://www.panoramio.com/photo/126709294...