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Two young children sitting on a chair in a dark background

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Black and white photo of a bridge spanning a river
Open book with the title "Homo-mi-crocosms
Engraving of a man standing on a beach
Old black and white photo of a large building with a flag on top
Old photo of a waterfall cascading down a rocky gorge
Black and white photo of a standing stone in the middle of a field
Large brick building with many windows and balconies
Portrait of Christian Gottlieb Frege
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