00734cam a22002537a 4500003000500000005001700005008004100022010001000063011001000073020001500083035001000098040000900108082002000117100002400137245013700161250001000298260004000308300002000348650002400368650001500392650002800407700002000435700002500455CHAP20220329142449.0010328d1999    us a    r     00110 eng d  a83842  a84814  a0136222005  a95340  cCHAP04a631.45bT7 199900aTroeh, Frederick R.10aSoil and water conservation :bproductivity and environmental protectionc/by Frederick R. Troeh, J. Arthur Hobbs and Roy L. Donahue  a3 ed.  aNew Jersey :bPrentice Hall,c1999.  a610 p. :bilus.14aAguaxConservacion.14aErosión.14aSuelosxConservación.0 aDonahue, Roy L.0 aHobbs, James Arthur.