National energy symposium (2017 : Colombo) National Energy symposium - 2017(19th and 20th November 2017 BMICH, Colombo 07, Sri Lanka) - Colombo Ministry of power and renewable energy 2017 - viii, 219 p. Subjects--Topical Terms: EnergyEnergy engineeringEnergy efficiency Dewey Class. No.: 333.79 NAT