Johannes Ludwig (Architekt, 1815) (German Wikipedia)

Analysis of information sources in references of the Wikipedia article "Johannes Ludwig (Architekt, 1815)" in German language version.

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1e-periodica.ch

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doi.org

Villa Planta in Chur. In: Die Eisenbahn. Band 16, Nr. 1, 1882, S. 1 ff., doi:10.5169/seals-10211.

e-periodica.ch

Necrologie: Ludwig, Johannes. In: Schweizerische Bauzeitung. Band 12, Nr. 2, 1888, S. 14 (e-periodica.ch).