Day: October 27, 2015

Διαχείριση της απώλειας

https://prezi.com/embed/4fhgpnaisyfj/?bgcolor=ffffff&lock_to_path=0&autoplay=0&autohide_ctrls=0&landing_data=bHVZZmNaNDBIWnNjdEVENDRhZDFNZGNIUE43MHdLNWpsdFJLb2ZHanI5aEJvUk5LbWl4U0N

by Konstantinos Bletsos