Estudios (3) Estudio (3) Threats (2) Sieges (2) Agriculture (2) Amenazas (2) Datos (2) Sitios (2) Agricultura (2) Programs (1) Greenhouse gases (1) Women chemists (1) Vegetables (1) Variations (1) Temperature (1) Stocks (1) Statutes (1) Soils (1) Soil degradation (1) Research (1) Quality of products (1) Profit (1) Production (Economic theory) (1) Potassium (1) Phosphorus (1) Paper (1) Nitrogen (1) Measurement (1) Interviews (1) Id (Psychology) (1)