14th GeoConference on Energy and clean technologies

14th GeoConference on Energy and clean technologies : international multidisciplinary scientific geoconference SGEM 2014, 17-26 June 2014, Albena Bulgaria : conference proceedings. Vol. II. -- 1. vyd. -- Sofia : STEF92, 2014. -- ISBN 978-619-7105-16-2. -- ISSN 1314-2704

I. 14th GeoConference on Energy and clean technologies SGEM 2014.international multidisciplinary scientific geoconference (14.:17.-26.06.2014:Sofia, Bulgaria)
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