Paper on Weiss and Bertalanffy presented at the ISSS 2006 50th annual meeting Stefan Blachfellner vor 18 Jahren At the ISSS 2006 (50th Annual Meeting) a paper by Drack and Apfalter was presented: Is Paul Weiss‘ and Ludwig von Bertalanffy’s System Thinking still valid today? Related posts Xi’an 2016 | Workshop | Unified Theory of Information by Stefan Blachfellner 8 Jahren ago Thomas Bugnyar präsentiert „Die Politik von Raben“ am BCSSS by Stefan Blachfellner 10 Jahren ago Review of the 4th International Circular Change Conference 2019 Maribor by Stefan Blachfellner 5 Jahren ago