WHO Expert Committee on Drug Dependence : twenty-eighth report.

Geneva : World Health Organization, 1993.

vi, 44 pages ; 24 cm.

"The WHO Expert Committee on Drug Dependence met in Geneva from 28 September to 2 October, 1992"--p. 1

Includes bibliographical references (p. 42)

Concepts and definitions -- Changes in the world situation in the last two decades -- Drug-related problems and patterns of use -- Approaches to prevention -- Treatment responses to harmful use of psychoactive substances -- Research and evaluation -- The need for an integrated national policy on psychoactive drugs -- Recommendations -- Pre-review of psychoactive substances.