. . . . . "Ditrih" . "Dietrich"@en . "Professor at the University of Hamburg Dietrich GERHARDT" . "GERHARDT" . "Dietrich Kurt" . . . "1911-02-11" . . . "musicologue Dietrich Gerhardt" . "D." . "Dietrich Gerhardt"@en . "D. Gerhardt" . "Gerhardt"@fr-FR . . "Gerhardt"@en . "Ditrih Gerhardt" . . "GERHARDT, Dietrich, Professor at the University of Hamburg" . . . "Gerhardt, Dietrich, musicologue" . "Dietrich Kurt Gerhardt" . "D. Gerhardt" . . . . . . "2011-11-20" .