00485nam a2200169Ia 4500008004100000082001600041100001900057245004200076250000600118260004400124300000800168650004100176650003400217653002000251653002200271700002200293170901s1960    xx            000 0 und d  a631.5bC68C  aCox, Joseph. F 0aCrop Management and Soil Conservation  a2  aLondonbJohn Wiley and Sons, Inc.c1960  a572  aAgriculture and related technologies  aTechnology (Applied sciences)  aCrop production  aSoil conservation  aJackson, Lyman. E