SGEM 2019 : 19th international multidisciplinary scientific geoconference SGEM 2019, 30 June - 6 July, 2019, Albena, Bulgaria. 19, Energy and clean technology. Nuclear technologies renewable energy sources and clean technologies recycling air pollution and climate change. -- 1st ed. -- Sofia : STEP92 Technology, 2019. -- 1150 s. : grafy, ilustr., tab. -- Bibliografické odkazy. -- ISBN 978-619-7408-83-6 (brož.). klimatické zmeny * obnoviteľná energia * biopalivá * životné prostredie * znečistenie životného prostredia