Labor (1) Vegetables (1) Valleys (1) Tomatoes (1) Rate of return (1) Production (Economic theory) (1) Marketing (1) Industrial productivity (1) Greenhouses (1) Competition (1) Business enterprises (1) Agriculture (1) Valles (1) Tomate (1) Empresa (1) Empresas (1) Hortalizas (1) Invernaderos (1) Productividad (1) Producción (1) Competencia económica (1) Marketing (1) Trabajo (1) Rentabilidad (1) Agricultura (1) production (1) productivité (1)