TY  - BOOK
ED  - United Nations Office on Drugs and Crime
TI  - Estimating prevalence : indirect methods for estimating the size of the drug problem / United Nations Office on Drugs and Crime
U1  - R 16.54 UNO -12226   
CY  - New York, 2003.
KW  - Drug abuse
KW  - Drug traffic
KW  - Narcotics
KW  - Control of
KW  - HEA
N1  - Note: Global Assessment Programme on Drug Abuse (GAP) toolkit module 2
ER  -