00475nam a2200169Ia 4500008004100000020001500041082001700056100001900073245003400092250000600126260005100132300000800183650004100191650003400232653002200266653001700288170901s1986    xx            000 0 und d  a0582301580  a631.45bM77S  aMorgan, R.P.C. 0aSoil Erosion and Conservation  a1  aLondonbLongman Scientific and Technicalc1986  a298  aAgriculture and related technologies  aTechnology (Applied sciences)  aSoil conservation  aSoil erosion