000 00307nam a2200109Ia 45e0
008 181001s1972 xx 000 0 und d
100 _aHeady & Agrawal
245 0 _aOperations Res. methods for Agril.Dec.
260 _aIOWA
_bState Univ.
_c1972
300 _a303
942 _2ddc
_cBK
999 _c3195
_d3195