birth_date: 1925-09-18 00:00:00
avg_rating: 3.93
name: John Gall
about: John Gall (September 18 1925 - December 15 2014) was an American author and retired pediatrician. Gall is known for his 1975 book General systemantics: an essay on how systems work and especi
death_date: 2014-12-15 00:00:00