ECOS 2020 Organizing Committee EFFICIENCY, COST, OPTIMIZATION, SIMULATION AND ENVIRONMENTAL IMPACT OF ENERGY SYSTEMS. INTERNATIONAL CONFERENCE. 33RD 2020. (ECOS 2020) (4 VOLS) Held 29 June - 3 July 2020, Osaka, Japan. MSRP: Was: Now: Our Price: $325.00 Add to Cart The item has been added