Original: Technics of Bowing, Op. 50. Composed by August Casorti. Violin sheet music. Technics of Bowing, Op. 50. Violin Method. For Violin.
Oversettelse: Technics av Bowing, Op. 50. Fiolin noter. Technics av Bowing, Op. 50. Violin Metode. Redigert av P Mittell. Fiolin. String Metode.