TY - GEN ED - United States General Accounting Office [GAO] TI - Substance abuse and violence prevention : multiple youth programs raise questions of efficiency and effectiveness : testimony before the Subcomittee on Oversight and Investigations, Committee on Education and the Workforce House of Representatives [PDF] PY - 1997/// CY - Washington PB - GAO KW - criminaliteit KW - drugs KW - geweld KW - jongeren KW - preventie KW - VS UR - http://www.google.be/search?q=Substance-abuse-and-violence-prevention-multiple-youth-programs-raise-questions ER -