00320nam a2200109Ia 4500008004100000082002000041245004700061260002500108300000900133600001700142650005100159130903s9999    xx            000 0 und d  a634.0:631.4  M4  aSoil productivity aspects of agroforestry.  aNairobibICRAFc1984  a85p.  aNair, P.K.R.  aAgroforestry,Soil Management,Soil Productivity