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AgricultureEarth SciencesSoil SciencesSoil FertilitySoil Organic MatterSoil ScienceNitrogen CycleNitrogen ManagementNutrient AvailabilityPhosphorus CycleSoil Nutrient AvailabilitySoil-plant Nutrient RelationsNitrogen Effects On YieldNitrogen To Phosphorus RatiosNutrient YieldNutrient-rich SoilsSoil Nitrogen AssessmentSoil Phosphorus AvailabilitySoil Phosphorus Dynamics
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Methods of soil analysis. Part 2. Chemical and microbiological properties.
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C. A. Black, S. Killermann · 1965 · 1.4K citations
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