Saesneg: Joint Consultation on European Emissions Trading System (EU ETS) Phase III Opt-out for Small Emitters and Hospitals

Cymraeg: Ymgynghoriad ar y Cyd am Drefniadau Eithrio Cam III ar gyfer Allyrwyr Bach ac Ysbytai o dan System Masnachu Allyriadau yr Undeb Ewropeaidd