Time (7) Tiempo (7) Milk (5) Temperature (4) Production (Economic theory) (4) Materials (4) Temperatura (4) Leche (4) Producción (4) Materiales (4) production (4) Labor (3) Quality of products (3) Pollution (3) Milking (3) Cold (3) Cattle (3) Calidad (3) Ganado vacuno (3) Frío (3) Contaminación (3) Trabajo (3) Lecheros (3) Ordeño (3) colonie (3) chaîne (3) Colombie (2) Evolution (Biology) (2) Regression analysis (2) Months (2)