000 00299nam a2200109Ia 4500
008 161118s2016 xx 000 0 und d
100 _aHill, L.D.
245 0 _aCosts & Benefits of Redefining the Grade Factor.
260 _bIllinois Agriculture Exp. Station,
_c1994
300 _a79 p.
942 _2ddc
999 _c43318
_d43318