000 00322nam a2200121Ia 4500
001 MPKV108099
008 120911s9999 xx 000 0 und d
082 _a630
245 _aAgronomy Journal Vol 73
_c;
246 _aAgronomy Journal Vol 22
260 _aWinconsin
_bAmerican Society of Agronomy
_c1981
650 _aAgronomy
999 _c71457
_d71457