This is a set of 25 books. There is no tobacco smell, writing, or pet odors. So interesting you won't be able to sleep, easy to understand in a short time So useful and interesting you won't be able to sleep Topics include: The Autonomic Nervous System Nutrients The Mysteries of the Human Body Addiction Protein Carbohydrates Visceral Fat Leadership Skills to Motivate People Kojiki (Records of Ancient Matters) Illustrated Economics Handbook Economics Social Psychology Dangerous Feng Shui The Universe Starting a Business Japanese Customs Psychology Stress Plants Geopolitics Sports Explained by Physics Physics Theory of Relativity Mathematical Theorems Biology