English operator: Panoramio described at URL: https://web.archive.org/web/20161102043813/http://www.panoramio.com/photo/122315111 determination method...
English operator: Panoramio described at URL: https://web.archive.org/web/20161101131140/http://www.panoramio.com/photo/122315964 determination method...
English operator: Panoramio described at URL: https://web.archive.org/web/20161031035541/http://www.panoramio.com/photo/122315079 determination method...