TY - GEN AU - Bless, Ruud AU - Van der Steenhoven, Paolo AU - Facy, Françoise TI - Utilisation of data on drugs and drug problems in Europe : report of a survey among the target groups of the epidemiology group of the Pompidou Group PY - 1997/// CY - Strasbourg PB - Council of Europe. Pompidou Group KW - België KW - drugs KW - epidemiologie KW - onderzoeksrapporten KW - Vlaanderen ER -