000 00336nam a2200133Ia 4500
008 130225s9999 xx 000 0 und d
100 _aShepherd, Geoffrey S.
245 _aSecular movement of corn prices
260 _aIowa
_c1931
300 _a184-223 p.
440 _aIowa Agricultural Experiment
901 _a21977
942 _cB
_2udc
999 _c3762
_d3762