Education (1) Childhood and youth (1) Assaying (1) Piping (1) Social integration (1) School attendance (1) School age (Entrance age) (1) Risk (1) Morale (1) Health status indicators (1) Girls (1) Evidence (1) Boys (1) Research (1) Valuation (1) Analysis (1) Evolution (1) Rating of (1) Mental health (1) Students (1) Evaluation (1) Tuberías--Diseño y construcción (1) Absentismo escolar (1) Indicadores de salud (1) Evaluación (1) Niñas (1) Investigación (1) Evolucionismo (1) Analyse (1) Voie urbaine (1)