De Gregoire le Grand à Stockhausen. Douze Siècles de Notation Musicale. Catalogue de l'exposition
Inbunden bok. Bruxelles. 1966. viii+169+(3) sidor.
Gott skick. Private-bound with marbled boards. Unknown bookbinder. Original wrappers inside. Corners are very slightly worn and the spine is slightly faded. Illustrated. With XVI plates.