English operator: Panoramio described at URL: https://web.archive.org/web/20161103105943/http://www.panoramio.com/photo/132941612 determination method...
English operator: Panoramio described at URL: https://web.archive.org/web/20161028233938/http://www.panoramio.com/photo/108884894...
English operator: Panoramio described at URL: https://web.archive.org/web/20161101001842/http://www.panoramio.com/photo/126430926...
English operator: Panoramio described at URL: https://web.archive.org/web/20161102193706/http://www.panoramio.com/photo/126430950...
English operator: Panoramio described at URL: https://web.archive.org/web/20161102193924/http://www.panoramio.com/photo/126430959...
English operator: Panoramio described at URL: https://web.archive.org/web/20161102193912/http://www.panoramio.com/photo/126430957...
English operator: Panoramio described at URL: https://web.archive.org/web/20161101065038/http://www.panoramio.com/photo/126430941...
English operator: Panoramio described at URL: https://web.archive.org/web/20161101132430/http://www.panoramio.com/photo/126430937...
English operator: Panoramio described at URL: https://web.archive.org/web/20161028063824/http://www.panoramio.com/photo/109848587...
English operator: Panoramio described at URL: https://web.archive.org/web/20161102193832/http://www.panoramio.com/photo/126430953...