English operator: Panoramio described at URL: https://web.archive.org/web/20161025014621/http://www.panoramio.com/photo/72769359 determination method...
Panoramio described at URL: https://web.archive.org/web/20161020092141/http://www.panoramio.com/photo/64959683 determination method or standard: SHA-1...
Panoramio described at URL: https://web.archive.org/web/20161019142342/http://www.panoramio.com/photo/64959714 determination method or standard: SHA-1...
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