000 00283nam a2200133Ia 4500
008 230108s9999 xx 000 0 und d
100 _aASA
245 0 _aAgronomy Journal Vol. 82 (4-6)
260 _bASA
260 _c1992
365 _b0.00
650 _aAgronomy
942 _cBK
999 _c249243
_d249243