Krebs, Karl August

Krebs, Karl August(1804–1880)

DEUMM Online

Krebs, Karl August(1804–1880)

Opernlexikon/Opera catalogue/Lexique des opéras/Dizionario operistico

Krebs, Karl August(1804–1880)

Hugo Riemanns Musik-Lexikon

KREBS, Karl August(1804–1880)

Algemene muziek encyclopedie

Krebs, Karl August(1804–1880)

Muzička enciklopedija

Krebs, Karl August(1804–1880)

MGG Online

SL, richard schaal

KREBS, Karl August(1804–1880)

Biographical dictionary of musicians, with a bibliography of English writings on music