Bản dịch gốc: Heller, Stephen. 3 Etudes, Op.139. 1 piano. Romantic. Studies. For piano. Scores featuring the piano. For 1 player.
Bản dịch: Heller, Stephen. 3 Etudes, Op.139. 1 piano. Romantic. Studies. For piano. Scores featuring the piano. For 1 player.