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close this bookSustainable Management of Soil Resources in the Humid Tropics (UNU, 1995, 146 pages)
close this folderVIII. Nutrient management
View the document(introduction...)
View the documentA. Chemical fertilizers
Open this folder and view contentsB. Reducing nutrient losses
View the documentC. Biological nitrogen fixation (BNF)
Open this folder and view contentsD. Nutrient cycling