Centro Vasco de Arquitectura
Euskal Herriko Arkitektura Ikerkundea
https://ia800207.us.archive.org/BookReader/BookReaderImages.php?zip=/4/items/wiebaueichmeinha00muth/wiebaueichmeinha00muth_jp2.zip&file=wiebaueichmeinha00muth_jp2/wiebaueichmeinha00muth_0009.jp2&id=wiebaueichmeinha00muth&scale=4&rotate=0
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