00574nam a2200193Ia 4500008004100000020001500041082001700056100002400073245007200097250000600169260003600175300000800211650004100219650003400260653002200294653002300316700002000339700002100359170901s2004    xx            000 0 und d  a0130968072  a631.45bT79S  aTroeh, Frederick R. 0aSoil and Water Conservation production and environmental Protection  a4  aNew JerseybPrentice Hallc2004  a666  aAgriculture and related technologies  aTechnology (Applied sciences)  aSoil conservation  aWater conservation  aDonahue, Roy L.  aHobbs, J. Arthur