00400nam a2200133Ia 4500008004100000082002400041100002000065245003600085260004100121300001500162490003500177600001800212650003600230140224s9999    xx            000 0 und d  a631.44' 474(213) L6  aYoung, Anthony.  aTropical soils and soil survey.  aLondonbCambridge Universitycc 1976  aviii,468p.  aCambridge Geographical Studies  aAnthony Young  aSoil Survey,Agriculture-tropics