Doors (1) Ownership (1) Communication (1) Observations (1) Surveys (1) Observations (1) Horizon (1) Wilt diseases (1) Play (1) Phosphorus (1) Particle size determination (1) Nitrogen (1) Land use (1) Land settlement (1) Hydromorphic soils (1) Hydrogen-ion concentration (1) Geology (1) Exchange (1) Concord (1) Clay (1) Carex (1) Carbon (1) Ability (1) Texture (1) Soils (1) Structure (1) Science (1) Carex (1) Colonización interior (1) Concentración de iones hidrógeno (1)