000			00525 a2200193 4500
020			_a0136222005
082			_a631.45 _bTRO
090			_c18497 _d28642
100			_aTroeh, Frederick R.
245			_aSoil and water conservation _bproductivity and environmental protection
250			_a3rd ed.
260			_aNew Jersey _bPrentice Hall _c1999 _g1999
300			_axiv,610p. _c24cm
650			_aSoil Conservation
650			_aWater Conservation
700			_aHobbs, J. Arthur
700			_aDonahue, Roy L.
942			_cPR
999			_c46339 _d46339