www.atdb.bg www.atdb.bg www.atdb.bg - All events en 2012 www.atdb.bg www.atdb.bg http://www.atdb.bg http://atdb.bg/assets/img/header_logo_en.jpg National Seminar on the future of District Heating in Bulgaria http://atdb.bg/en/events/view/national-seminar-on-the-future-of-district-heating-in-bulgaria http://atdb.bg/en/events/view/national-seminar-on-the-future-of-district-heating-in-bulgaria 30.11.-1 00:00:00 26 October 2012