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100 1 _aTROEH, Frederick.
245 1 0 _aSoil and water conservation.
250 _a2nd ed.
260 _aNew Jersey :
_bPrentice Hall,
_c1991.
300 _a 530 p. :
_b ill. ;
_c 24 cm.
650 0 _asoil conservation
908 _a070719
999 _c535
_d535