Books like The Complete Book of Enzyme Therapy
Anthony J. Cichoke
The Complete Book of Enzyme Therapy is 502 pages, about 9 hours 12 minutes at 250 words a minute.
6 books to read next
How long each takes
Prescription for Nutritional Healing 12.6 h 
The Biochemic Handbook 2.3 h 
The Twelve Tissue Remedies of Schüssler 7.7 h 
Natural Healing for Women 7.7 h 
Alchemy of Herbs 6.5 h 
Shivambu Kalpa 2.9 h Bar height shows length. Estimated at 250 words a minute.