[[21]]., [[Meriangasse]] [[Adresse:Meriangasse 5|5]]
Gedenktafel Oskar Helmer# ab1c2c87db7f02cf5d7016240be56a6e
WGW RDF resource: http://www.geschichtewiki.wien.gv.at/Special:URIResolver/Gedenktafel_Oskar_Helmer-23_ab1c2c87db7f02cf5d7016240be56a6e