Indexes (3) Estudios (3) Índices (3) Labor (2) Quality of products (2) Curves (2) Agriculture (2) Calidad (2) Curvas (2) Trabajo (2) Agricultura (2) Contingent valuation (1) Weights and measures (1) Valuation (1) Tourism (1) Sociology (1) Social sciences (1) Quality of life (1) Prices (1) Pollution (1) Policy sciences (1) Mexicans (1) Mechanical movements (1) Life (1) Id (Psychology) (1) Farm manure (1) Evaluation (1) Environmental policy (1) Entropy (1) Electric networks (1)