Title: The ion effect
Subjects: Effect of environment on, Environmentally induced diseases, Human beings, Ionized air, Ions, Physiological effect, Popular works, Air Ionization, Environmental Health, Popular Works, Air, ionized, Effect of climate on, Air ionisé, Effets physiologiques, Maladies de l'environnement, Homme, Influence de l'environnement, Influence du climat