I reference this book all the time. 

In fact, I have two copies so I always have one with me at the two places where I spend most of my time. 

Though our standard "basic" protocols help most people overcome most challenges, this book goes into more detail on many specific diseases and symptoms.

This book does not cover EVERY disease, but it does cover most of the ones that we encounter in real life.

Further than this appendix utility, the book outlines simple ways that we can basically become our own doctor. We can test ourselves for most health metrics; we can measure our own blood pressure and basically preform our own physical examinations. 

I consider this book mandatory reading and reference for anyone in our field of alternative health, and DEFINITELY for those of us who promote Dr. Wallach's message and products.