English operator: Panoramio described at URL: https://web.archive.org/web/20161025225058/http://www.panoramio.com/photo/81245207 determination method...
English operator: Panoramio described at URL: https://web.archive.org/web/20161024102314/http://www.panoramio.com/photo/81242060 determination method...
English operator: Panoramio described at URL: https://web.archive.org/web/20161024144701/http://www.panoramio.com/photo/81245310 determination method...