title: [Research activities in the urban school environment. Prevention of problems in adolescence].
mesh_terms: D000293:Adolescent; D000342:Affective Symptoms / Q000517:prevention & control; D001530:Belgium; D005260:Female; D006266:Health Education; D006801:Humans; D008297:Male; D012736:Sex Education; D019966:Substance-Related Disorders / Q000517:prevention & control; D014505:Urban Population
vernacular_title: Recherche-action en milieu scolaire urbain. Prévention des problèmes à l'adolescence.