English operator: Panoramio described at URL: https://web.archive.org/web/20161016230820/http://www.panoramio.com/photo/42483835...
English operator: Panoramio described at URL: https://web.archive.org/web/20161024101621/http://www.panoramio.com/photo/86845051...
English operator: Panoramio described at URL: https://web.archive.org/web/20161013120343/http://www.panoramio.com/photo/16151582...
English operator: Panoramio described at URL: https://web.archive.org/web/20161012082408/http://www.panoramio.com/photo/10039418...
English operator: Panoramio described at URL: https://web.archive.org/web/20161111155115/http://www.panoramio.com/photo/47988249...
English operator: Panoramio described at URL: https://web.archive.org/web/20161022130637/http://www.panoramio.com/photo/52722659...
English operator: Panoramio described at URL: https://web.archive.org/web/20161031191642/http://www.panoramio.com/photo/114535892...
English operator: Panoramio described at URL: https://web.archive.org/web/20161026203314/http://www.panoramio.com/photo/87591257...
English operator: Panoramio described at URL: https://web.archive.org/web/20161015180851/http://www.panoramio.com/photo/30542939...
English operator: Panoramio described at URL: https://web.archive.org/web/20161013153138/http://www.panoramio.com/photo/28755124 determination method...