Full-colour laminated poster. The German pioneer in electro-acupuncture, Dr Voll, established a relation between dental problems and the state of organs and body parts. This chart is a concise summary of the results of his research: on the first side the organs, nerves, glands, joints, bones. corresponding to each tooth are presented in a large circular table. A text explaining the theory and applications of this relation between the teeth and the rest of the body, as well as a special illustration showing the correspondence between the teeth and the segment of the spinal column are found at the back.