Astronomical Observatories, World Network, Serbia Homepage Astronomical Observatories, World Network, Serbia Study Learning Training Coaching Syllabus Astronomical Observatories, World Network, Serbia Syllabus Astronomical Observatories, World Network, Serbia Learning Training Coaching Tools URL: http://www.societalsystem.com/feb/ksde.feb/xsa.ksde.feb/gs0051.ksde.feb.html StSNmr: 00 - StSTop: ksde.feb - StSFil: gs0051.ksde.feb Date: 02.07.2016 Author(s): SocietalSystem-Editors Trainer Coacher: ............................ Manager: ........................................ Contact: contact@societalsystem.com