science économique (7) Economics (7) papier (4) analyse (4) Paper (4) Manufacturers' agents (4) Commission merchants (4) Analysis (4) monde (3) tendance (3) enquête (3) infection (3) taux (3) Regression analysis (3) Persons (3) Human beings (3) Japanese (3) Infection (3) Influence (3) lieu de travail (2) société (humaine) (2) physique (2) modèle (2) effet (2) République populaire de Chine (2) Fatigue (2) Aging (2) Statistics (2) Ageism (2) Employees (2)