000 00325nam a2200133Ia 4500
008 130223s9999 xx 000 0 und d
245 _aAgricultural research : Impact on soybeans
260 _aIowa
260 _c1975
300 _a62 p.
440 _aNo. 77; Iowa Agricultural and
901 _pS23419
942 _cB
_2udc
999 _c152122
_d152122