TY  - GEN
AU  - Brain, Kevin
AU  - Parker, Howard
AU  - Bottomley, Tim
TI  - Evolving crack cocaine careers : new users, quitters and long term combination drug users in N.W. England [PDF]
PY  - 1998///
CY  - Manchester
PB  - University of Manchester
KW  - cocaïne
KW  - drugs
KW  - epidemiologie
KW  - gebruikscarrière
KW  - onderzoeksrapporten
KW  - Verenigd Koninkrijk
UR  - http://www.google.be/search?q=Evolving-crack-cocaine-careers-new-users-quitters-and-long-term-combination-drug-users 
ER  -