état (1) population rurale (1) besoin (1) Causes (1) Article (1) Cases (1) Volume (Cubic content) (1) Social isolation (1) Rural population (1) Process (Law) (1) Marginality, Social (1) Hypothesis (1) Grammar, Comparative and general--Article (1) Experience (1) Change (1) Attention (1) Article (1) Cases (1) Areas (1) Volume (1)