Gregorini Demetrio URL: https://web.archive.org/web/20161015002146/http://www.panoramio.com/user/2601511?with_photo_id=30021898 operator: Panoramio described...
Gregorini Demetrio URL: https://web.archive.org/web/20161015083456/http://www.panoramio.com/user/2601511?with_photo_id=30021863 operator: Panoramio described...
Gregorini Demetrio URL: https://web.archive.org/web/20161101191948/http://www.panoramio.com/user/2601511?with_photo_id=30027879 operator: Panoramio described...
Gregorini Demetrio URL: https://web.archive.org/web/20161101192002/http://www.panoramio.com/user/2601511?with_photo_id=30027840 operator: Panoramio described...
Gregorini Demetrio URL: https://web.archive.org/web/20161013235548/http://www.panoramio.com/user/2601511?with_photo_id=29574931 operator: Panoramio described...
English operator: Panoramio described at URL: https://web.archive.org/web/20161012212122/http://www.panoramio.com/photo/18423284 determination method...
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