Marafioti, P. Mario Caruso's method of voice production ; the scientific culture of the voice, by P. Mario Marafioti, M.D., preface by Victor Maurel. - New York, D. Appleton and Company, (c)1922. - xix, 308 pages illustrations, portraits, facsimiles 21 cm. "Vocal exercises" : pages 285-302. LCCN: 22009552 Subjects--Personal Names: Caruso, Enrico, 1873-1921. Subjects--Topical Terms: Singing--Methods. LC Class. No.: MT845 / .C378 1922 MT845