Computer programs (1) Methods (1) Software (1) Atlases (1) Lady's maids (1) Women household employees (1) Groundwater (1) Water (1) Spleen (1) Risk (1) Pollution (1) Pesticides (1) Nitrates (1) Land use, Rural (1) Land use (1) Land settlement (1) Household employees (1) Crop zones (1) Coincidence (1) Chance (1) Average (1) Addition (1) Methods (1) Use studies (1) Use studies (1) Age (1) Rates (1) Quality (1) Colonización interior (1) Bazo (1)