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This book of etudes (followed by three duets) by Edmond Vobaron is similar to the Bleger Ten Artistic Recreations and the Tyrell 40 Progressive Studies. They are in a traditional staccato articulation form, great for developing students. Many of the etudes move in a scale like pattern, shifting from major to minor keys, many diminished chords, and frequent interval leaps.
You can have a look at the first few pages to the left, then you can grab an immediate PDF download above.