English operator: Panoramio described at URL: https://web.archive.org/web/20161027153808/http://www.panoramio.com/photo/23486738 determination method...
English operator: Panoramio described at URL: https://web.archive.org/web/20161013080505/http://www.panoramio.com/photo/14992542...
English operator: Panoramio described at URL: https://web.archive.org/web/20161012080327/http://www.panoramio.com/photo/14992315...