"Modern Essentials 15th Edition Soft Cover Handbook" 430 Pages.
 
Become An Essential Oils Expert! For over 10 years, Modern Essentials® has been the top-selling reference guide for learning everything about dōTERRA® essential oils and their everyday uses. Modern Essentials has the easiest-to-use format to help you quickly find the most important information:
 
Which essential oils to use for hundreds of health conditions.
How to safely and effectively use essential oils, blends, and supplements.
Hundreds of ways to incorporate essential oils into daily living.