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    • Fertility of humic Andosols of the high Bracken zone in Kenya 

      Mugambi, SM (College of Agriculture and Veterinary Sciences, University of Nairobi, 1983)
      Preliminary work on availability of and response to phosphorus in a range of Kenya soils showed that availability is least in one particular soil group, the strongly acid humic Andosols of the high bracken zone in ...