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close this bookSustainable Management of Soil Resources in the Humid Tropics (UNU, 1995, 146 p.)
close this folderIV. Basic concepts of sustainable land use in the humid tropics
View the document(introduction...)
Open this folder and view contentsA. Requirements of a sustainable improved agricultural system
Open this folder and view contentsB. Components of a sustainable system
View the documentC. Systems approach