The "Chord" in Monocord, Clavicord, Harpsicord and Vocal Cord
Materiale a stampa, spoglio
PER 85
The Galpin Society Journal, VIII, Marzo, 47-49,
Virdung's Keyboard Illustrations
Materiale a stampa, spoglio
PER 85
The Galpin Society Journal, XV, Marzo, 82-88,
