Gesundheitstechnische Gesellschaft (Hrsg.), Gesundheits-Ingenieur. , Bauphysik, Umwelttechnik, Band 13, Oldenbourg (Verlag), München 1890, (vom 15. September 1890, Nummer 18) S. 619 und 620

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Size: 1329px × 1881px
Photo credit: © Historic Images / Alamy / Afripics
License: Licensed
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