TY  - GEN
AU  - Rootman, I.
AU  - Hughes, P.H.
TI  - Drug-abuse reporting systems [PDF]
T2  - WHO offset publication
PY  - 1980///
CY  - Geneva
PB  - WHO
KW  - dataverzameling
KW  - drugs
KW  - epidemiologie
KW  - methodiek
UR  - http://www.google.com/search?q=drug-abuse-reporting-systems rootma hughes
ER  -