English operator: Panoramio described at URL: https://web.archive.org/web/20161027173523/http://www.panoramio.com/photo/91543292 determination method...
English operator: Panoramio described at URL: https://web.archive.org/web/20161102075050/http://www.panoramio.com/photo/124673681...
English operator: Panoramio described at URL: https://web.archive.org/web/20161023185158/http://www.panoramio.com/photo/67925030...
English operator: Panoramio described at URL: https://web.archive.org/web/20161017085540/http://www.panoramio.com/photo/43062610...
English operator: Panoramio described at URL: https://web.archive.org/web/20161016191754/http://www.panoramio.com/photo/43062659...
English operator: Panoramio described at URL: https://web.archive.org/web/20161016210258/http://www.panoramio.com/photo/43062637...
English operator: Panoramio described at URL: https://web.archive.org/web/20161121123037/http://www.panoramio.com/photo/37861670...
English operator: Panoramio described at URL: https://web.archive.org/web/20161017100746/http://www.panoramio.com/photo/43062762...
English operator: Panoramio described at URL: https://web.archive.org/web/20161017152312/http://www.panoramio.com/photo/43062620...
English operator: Panoramio described at URL: https://web.archive.org/web/20161024143507/http://www.panoramio.com/photo/89749758...
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