monde (1) temps (durée) (1) test (1) espèce (1) politique (1) pharmacologie (1) intérêts (1) industrie (1) âge (1) Vitality (1) Article (1) Death (1) States (1) Futures (1) Will (1) Vitality (1) Twenty-first century (1) Time (1) Species (1) Societies (1) Social service (1) Self (1) Refrigeration and refrigerating machinery (1) Psychologists (1) Porter (1) Politics, Practical (1) Political science (1) Pharmacology (1) Must (1) Human beings (1)