[[9]]., [[Adresse:Mariannengasse 20|Mariannengasse 20]] (Sterbeadresse)
Ludwig Koch# 0f76f095a9a99289c165946cd711becf
WGW RDF resource: http://www.geschichtewiki.wien.gv.at/Special:URIResolver/Ludwig_Koch-23_0f76f095a9a99289c165946cd711becf