- (Music) SCHOOL OF EFFORT. Etude de la Velocitè. Carl Czerny. Henry Litolff. 1920? Paperback. Average condition. Loose binding. Blank cover. Tears and peeling on the spine. 40 etudes. Piano. Op. 229. Revised by Clemens Schultze. pp. 80. Euro 7.99. Cod. 314923.
