books.google.com - While there have always been norms and customs around the use of drugs, explicit public policies--regulations, taxes, and prohibitions--designed to control drug abuse are a more recent phenomenon. Those policies sometimes have terrible side-effects: most prominently the development of criminal enterprises...http://books.google.com/books/about/Drugs_and_Drug_Policy_What_Everyone_Need.html?id=XC2zIJs1EoEC&utm_source=gb-gplus-shareDrugs and Drug Policy:What Everyone Needs to Know
