Vienna in figures ... / owned, published and edited by Vienna City Administration, Municipal Department 23, Economic Affairs, Labour and Statistics. Vienna : Vienna City Administration, Municipal Department 23, Economic Affairs, Labour and Statistics, [2015?-] : (2016). Wienbibliothek im Rathaus. https://resolver.obvsg.at/urn:nbn:at:AT-WBR-145084 / Urheberrechtsschutz (InC 1.0)