John Gall
John Gall (1925-2014) was a pediatrician and a professor at the University of Michigan.
(1975) Systemantics [English] (1975) Sistemantica [Italiano] (1975) Systemantik [Deutsch] (1975) Sistemántica [Español] (1975) Systémantique [Français]
External links
Wikipedia : John Gall [English]
Wikipedia : Systemantics [English]