Cunningham, Wells: Art Of Scales (cello)  

The first scale book to guide students of all levels in a step-by-step fashion through the most essential scale exercises. Rhythmic and bowing variations of gradually increasing difficulty take the monotony out of daily scale practice, and because each scale and associated scale work is located on facing pages, assigning scales has never been easier. Institutes a new approach to practicing octaves, thirds, and even tenths. Designed to help cellists achieve unparalleled command of even the most advanced techniques.