TY  - GEN
AU  - Richards, Louise
AU  - Blevens, Louise B. 
TI  - The epidemiology of drug abuse : current issues [PDF]
T2  - NIDA research monograph series
PY  - 1977///
CY  - Rockville
PB  - NIDA
KW  - drugs
KW  - epidemiologie
KW  - onderzoeksmethoden
KW  - onderzoeksrapporten
UR  - http://www.google.com/search?q=The-epidemiology-of-drug-abuse current-issues 
ER  -