@book{81095,
	author = {GRIFFITHS, P.},
	title = {DRUGS PREVENTION AMONG SCHOOL EXCLUDEES. EN: EVALUATING EFFECTIVENESS. DRUGS PREVENTION RESEARCH CONFERENCE. DECEMBER 3RD-5TH 1997. PAPER 20},
	publisher = {DRUGS PREVENTION INITIATIVE},
	year = {1999},
	address = {Londres}
}