Please select from below: Introduction to YLEO and Aromatherapy The Missing Link What Are Essential Oils? What is Aromatherapy? How Do Essential Oils Work? Thieves: 99.97% Bacterial Kill Rate! Essential Oil Chemistry Frequency and Distillation of YL Essential Oils Chemical Constituents of Essential Oils Use and Application of Essential Oils Essential Oils for Personal Use Using Essential Oils with Animals Diffusing Essential Oils in the Home and Office History of Essential Oils YLEO Research Testimonials Is Your Body Demanding Food Enzymes Excerpts from "Aromatherapy - The Essential Beginning" Build Your Aromatherapy Library Gary Young, Founder of YLEO Bibliography