puits (1) spectacle (1) secteur des services (1) milieu rural (1) productivité (1) firme (1) survie (1) Death (1) Urban ecology (Sociology) (1) Variations (1) Survival (1) Service industries (1) Metropolitan areas (1) Industries (1) Impact (1) Evidence (1) Death (1) Cities and towns (1) Areas (1) Productivity (1) nucleus (1) mort (1)