English operator: Panoramio described at URL: https://web.archive.org/web/20161027191351/http://www.panoramio.com/photo/92221048...
English operator: Panoramio described at URL: https://web.archive.org/web/20161029211942/http://www.panoramio.com/photo/92395654 determination method...
Panoramio described at URL: https://web.archive.org/web/20161028072812/http://www.panoramio.com/photo/107645937 determination method or standard: SHA-1...
Panoramio described at URL: https://web.archive.org/web/20161101102724/http://www.panoramio.com/photo/112059259 determination method or standard: SHA-1...
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