Panoramio described at URL: https://web.archive.org/web/20161023193315/http://www.panoramio.com/photo/57826214 determination method or standard: SHA-1...
Panoramio described at URL: https://web.archive.org/web/20161021233828/http://www.panoramio.com/photo/57826182 determination method or standard: SHA-1...
Panoramio described at URL: https://web.archive.org/web/20161031234000/http://www.panoramio.com/photo/117598959 determination method or standard: SHA-1...