English operator: Panoramio described at URL: https://web.archive.org/web/20161020044307/http://www.panoramio.com/photo/50610312 determination method...
English operator: Panoramio described at URL: https://web.archive.org/web/20161021073353/http://www.panoramio.com/photo/50664533...
English operator: Panoramio described at URL: https://web.archive.org/web/20161019143145/http://www.panoramio.com/photo/50610286 determination method...