練習曲

30 Piano Pieces for Young Players op. 27, Book 1
Heft I: Nr. 1-10

30 Piano Pieces for Young Players op. 27, Book 2
Heft II: Nr. 11-20

30 Piano Pieces for Young Players op. 27, Book 3
Heft III: Nr. 21-30

30 Progressive Studies Op. 46

30 Studien
für Flöte solo

30 Velocity Studies

32 (Thirty-two) Rose Etudes for Clarinet
Revised and Corrected Edition

32 Etudes de perfectionnement

32 Etudes for Bass Trombone
Performance Scores

32 Etudes mélodiques

32 Études Melodiques Et Techniques

32 Etudes miniatures à mémoriser

32 Jazzologies

33 Etudes

35 Études Techniques

36 Caprices Or Etudes

36 Celebrated Studies
for the Cornet

36 Celebrated Studies for The Tuba

36 Elementar-Etüden
für Violine solo

36 Elementary and Progressive Studies