"Music theory." . . . . . "The harmonics of Manuel Bryennius" . "The harmonics of Manuel Bryennius"@en . . . "Manouēl Bruenniou Harmonika" . . . . . . . . . . . . . "Harmonics" . . . . . "The harmonics" . . . . . . . "The Harmonics of Manuel Bryennius. [ed. by] Goverdus Henricus Jonker" . . . . . "The Harmonics of Manuel Bryennius" . "The Harmonics of Manuel Bryennius"@en . "The Harmonics" . "Manuel Bryenniu harmonika" . . . . . "Manoyhl Bpyennioy Apmonika"@en . . "To 500" . . "400 - 1500" . . . . "Music Theory Medieval, 400-1500." . .