Backer Grøndahl, Agathe

Backer-Grøndahl, Agathe Ursula(1847–1907)

DEUMM Online

Backer, Agata Orsola

Dizionario universale dei musicisti

BACKER-GROENDAHL, Agathe Ursula(1847–1907)

International encyclopedia of women composers

Backer-Gröndahl, Agata Orsola.

Dizionario universale dei musicisti

Backer-Gröndahl, Agathe Ursula(1847–1907)

Hugo Riemanns Musik-Lexikon

Gröndahl, Agathe(1847–1907)

Muzička enciklopedija