document (3) conflit (3) crime (3) Estimates (3) Crime (3) Estimates (3) crime (3) jeunesse (2) puits (2) accroissement de la population (2) modèle (2) plomb (2) environnement (2) index (2) densité de population (2) Colombie (2) Development (2) Case (2) Juvenile (2) Youth (2) Young adults (2) Population density (2) Population (2) Police (2) Perception (2) Nature and nurture (2) Methodology (2) Lead (2) Grammar, Comparative and general--Case (2) Example (2)