température (1) stratification (1) espèce (1) risque (1) productivité (1) participation (1) papier (1) histoire (1) aliment (1) ethnologie (1) science économique (1) enfant (1) aménagement du temps (1) Food (1) Variation (1) History (1) Children (1) Childhood and youth (1) Acquisition (1) Caregivers (1) Economics--Sociological aspects (1) Teenagers (1) Work (1) Women (1) Time management (1) Temperature (1) Species (1) Societies (1) Sex differences (1) Risk (1)