Description
Item Description:"Developed for the National Institute on Drug Abuse, Division of Epidemiology and Prevention Research, by the Research Triangle Institute ... under contract number 271-89-8333"--Title page verso.
Shipping list number: 91-630-P.
"Printed 1991"--Title page verso.
Physical Description:viii, 62 pages : illustrations, map ; 28 cm.
Bibliography:Includes bibliographical references (pages 49-50).