Racially mixed people (1) Surveys (1) Surfaces (1) Sampling (1) Research institutes (1) Research (1) Profit (1) Production (Economic theory) (1) Participant observation (1) Indigenous peoples (1) Methodology (1) Irrigation (1) Interviews (1) Farmers (1) Estates (Law) (1) Erosion (1) Creoles (1) Costs, Industrial (1) Corn (1) Chemical elements (1) Attachment and garnishment (1) Agriculture (1) Agricultural engineering (1) Ability (1) Patrimonio (1) Mestizos (1) Toma de muestras (1) Mayos (1) Terrenos (1) Ingeniería rural (1)