Books Uses and Abuses of Plant-Derived Smoke: Its Ethnobotany as Hallucinogen, Perfume, Incense, and Medicine by Pennachio, Jefferson and Havens Uses and Abuses of Plant-Derived Smoke is a book I stumbled upon while looking for something else. It's tempting to say it's a very niche subject; the authors say this is the first book on the topic. After reading the... Alun SaltJune 20, 2012