TY - GEN AU - Kröger, Christoph AU - Winter, Heike AU - Shaw, Rose TI - Guidelines for the evaluation of drug prevention : a manual for programme-planners and evaluators T2 - Manuals SN - 92916805245 PY - 1998/// CY - Luxembourg PB - Office for Official Publications of the European Communities KW - drugs KW - Europa KW - evaluatie KW - preventie KW - richtlijnen ER -