
1) AEC successor 2) Das Rheingold contralto 3) Das Rheingold earth goddess 4) Das rheingold role 5) Earth goddess in opera 6) Earth goddess in Siegfried 7) Earth goddess in the Ring 8) Goddess in Das Rheingold 9) Goddess of the earth 10) Hertha 11) Mother of Brunhilde 12) Mother of Brunnhilde 13) Mother of the valkyries
Found on
https://www.crosswordclues.com/clue/erda

abbreviation: Energy Research and Development Administration
Found on
http://www.encyclo.co.uk/local/20021

acronym: U.S. Energy Research and Development Administration (formerly AEC; now DOE)
Found on
https://www.encyclo.co.uk/local/20002
No exact match found.