00530nam a2200169Ia 4500008004100000082001700041100002400058245004400082260003800126300000800164650003800172650003400210653003400244653003500278700002600313700002100339170901s1955    xx            000 0 und d  a628.13bF92S  aFrevert, Richard K. 0aSoil and Water Conservation Engineering  aLondonbJohn Wiley and Sonsc1955  a479  aEngineering and allied operations  aTechnology (Applied sciences)  aSoil conservation engineering  aWater conservation engineering  aEdminster, Talcott W.  aSchwah, Glenn O.