In response to the increasing need for addictions prevention and treatment services, academic institutions are offering a variety of formal study and training programs for addictions counselors and need a resource to supplement these programs. Part of the Foundations of Addiction Counseling Series, this book presents an accurate and complete classification system for all of the drugs and substances of abuse or the "abusable psychotropics." It fills the void for accurate information that will help addictions counselors understand and learn about drug and substance use behaviors and develop their own practice competencies.