A 1989 book celebrating "#EricTrist in Canada", with a chapter by David Morley (Dean, Faculty of Environmental Studies, York University (Toronto), 2001-2004), filled in gaps between 1965 #FredEEmery "The #CausalTexture of #OrganizationalEnvironments" to current day #SystemsThinking on organizations.
http://coevolving.com/blogs/index.php/archive/trist-in-canada-organizational-change-action-learning/