This revised edition of <i>Aromatherapy Workbook</i> incorporates the latest biochemical research with the spiritual and psychological effects of essential oils. A practical guide to the history, folklore, science, and art of aromatherapy, it also includes extensive reference charts that summarize the therapeutic uses of more than 70 essential oils.  </p><p><br />. More than 50,000 copies sold in previous edition.  </p><p><br />. Easy-to-follow illustrated reference for beginners.  </p><p><br />. A desk resource and teaching tool for practicing aromatherapists.  </p>