Books like Science of Breath
Rama Swami, Swami Rama, Rudolph Ballentine, Alan Hymes
Science of Breath is 139 pages, about 2 hours 33 minutes at 250 words a minute.
12 books to read next
How long each takes
Light on Yoga 7.7 h 
Breath 6.1 h 
Yoga 7.9 h 
Control Your Mind and Master Your Feelings 4.2 h 
Light on Prāṇāyāma 5.4 h 
Resurrection of the Body 3.7 h 
Spark 5.6 h 
Hatha Yoga 3.2 h 
You Are Not the Target 5.3 h 
Yoga 5.7 h 
Acu-Yoga 4.5 h 
Unfuck Your Brain 3.5 h Bar height shows length. Estimated at 250 words a minute.