arbre (1) participation (1) pièce d'exposition (1) classification (1) taux (1) Language (1) Aspect (1) Census (1) Census (1) Labor (1) Single mothers (1) Usage (1) Trees (1) Swiss (1) Population (1) Participation (1) Mothers (1) Hypothesis (1) Gifts (1) Finance (1) Evidence (1) Error (1) Classification (1) Census (1) Classification (1) Classification (1) Finance (1) Regions (1) Utilization (1) Usage (1)