archive.org/web/20161024191159/http://www.panoramio.com/user/801668?with_photo_id=86559555 operator: Panoramio described at URL: https://web.archive...
01102013.pdf Nederlands: Deze PDF laat de breakdown dd 01-10-2013 van de Category:Royal Library, The Hague in subcategorien en mediabestanden...
English operator: Panoramio described at URL: https://web.archive.org/web/20161029152137/http://www.panoramio.com/photo/94490998 determination method...
archive.org/web/20161024232736/http://www.panoramio.com/user/801668?with_photo_id=88371948 operator: Panoramio described at URL: https://web.archive...
archive.org/web/20161024215217/http://www.panoramio.com/user/801668?with_photo_id=88371452 operator: Panoramio described at URL: https://web.archive...
archive.org/web/20161024192704/http://www.panoramio.com/user/801668?with_photo_id=88370952 operator: Panoramio described at URL: https://web.archive...
archive.org/web/20161024233538/http://www.panoramio.com/user/801668?with_photo_id=88371876 operator: Panoramio described at URL: https://web.archive...
archive.org/web/20161027205241/http://www.panoramio.com/user/4678999?with_photo_id=100030901 operator: Panoramio described at URL: https://web.archive...
archive.org/web/20161029152047/http://www.panoramio.com/user/4678999?with_photo_id=94490993 operator: Panoramio described at URL: https://web.archive...
archive.org/web/20161029051048/http://www.panoramio.com/user/4678999?with_photo_id=94491012 operator: Panoramio described at URL: https://web.archive...
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