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Phantastische Treppen, Brücken, Loggien von der Renaissance bis heute
BASE - Bielefeld Academic Search Engine , ART-Dok (Virtual Library for Art, Heidelberg University)
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Wiadukt ulicy Karowej w Warszawie
BASE - Bielefeld Academic Search Engine , ART-Dok (Virtual Library for Art, Heidelberg University)
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Wiadukt im. Markiewicza na ul. Karowej w Warszawie
BASE - Bielefeld Academic Search Engine , ART-Dok (Virtual Library for Art, Heidelberg University)