monde (2) développement technologique (2) sociologie (2) philosophie (2) association (2) plomb (2) revenu (2) développement économique (2) Russie (2) Philosophy (2) Nineteen sixties (2) Gross domestic product (2) Gini coefficient (2) Value (2) Sociology (2) Social groups (2) Science (2) Political stability (2) Philosophy (2) Lead (2) Indexes (2) Income (2) Hypothesis (2) Guerrilla warfare (2) Growth (2) Explanation (2) Examinations (2) Equality (2) Economic development (2) Demonstrations (2)