The method is praised for being "densely packed" with nearly 200 pages of etudes and duets, providing a rich variety of musical material for study.
TROMBA - l'impugnatura dello strumento e la postura del trombettista Metodo Peretti Per Tromba Pdf
Warning: Avoid sites requiring you to download an ".exe" file or that ask for your credit card for a "free" PDF. These are scams. The method is praised for being "densely packed"