Prof Wilhelm HankelTo play this audio please enable JavaScript, and consider upgrading to a web browser that supports HTML5 videoBrunsmann, Jörg26.04.201026. April 2010deutsch: Prof Wilhelm Hankel - Produziert: 26.04.2010 - 16:38:43 von Brunsmann, Jörghttps://p.dw.com/p/N70xAnzeige