The historic centre of Vienna : world cultural heritage and vibrant hub / publisher: City of Vienna, Municipal Department 19 (Architecture and Urban Design) ; editorial team: Andrea Kreppenhofer [und 2 weitere] ; texts: Manfred WehdornThe historic centre of Vienna : world cultural heritage and vibrant hub / publisher: City of Vienna, Municipal Department 19 (Architecture and Urban Design) ; editorial team: Andrea Kreppenhofer [und 2 weitere] ; texts: Manfred Wehdorn