Sure thing. The full title is Illegal drugs: A Complete guide to their History, Chemistry, Use and Abuse.
The author is Paul Gahlinger MD PhD
I used the amazon link in the review so that anyone wishing to purchase this can use the drugs forum link, which supports the site.
Um, i also know the earlier edition of the book is called "Illegal Drugs, A to Z," and i suspect that the major differences are changes in drug policy and legality, and the scheduling of some drugs.
The book begins with a general knowledge portion, detailing the histories of the main groups of drugs, then giving a tutorial on understanding the legal information about drugs, drug testing, etc. The second section is devoted to drug descriptions, containing chapters discussing different substances, for example, LSD. The drug's effects are explained, then there are sections on safety issues, addiction potential, positive effects of the drug, chemistry, and a profile of 'who's using' the drug. It is extremely in-depth and a great resource.