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English operator: Panoramio described at URL: https://web.archive.org/web/20161101125450/http://www.panoramio.com/photo/117342623...
English operator: Panoramio described at URL: https://web.archive.org/web/20161030161137/http://www.panoramio.com/photo/117397983...
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English operator: Panoramio described at URL: https://web.archive.org/web/20161030222405/http://www.panoramio.com/photo/117342770...
English operator: Panoramio described at URL: https://web.archive.org/web/20161102055015/http://www.panoramio.com/photo/117397922...
English operator: Panoramio described at URL: https://web.archive.org/web/20161103050710/http://www.panoramio.com/photo/131947386 determination method...
English operator: Panoramio described at URL: https://web.archive.org/web/20161101014524/http://www.panoramio.com/photo/117398539...
English operator: Panoramio described at URL: https://web.archive.org/web/20161028092549/http://www.panoramio.com/photo/109981608...
English operator: Panoramio described at URL: https://web.archive.org/web/20161031162340/http://www.panoramio.com/photo/117342795...