000 00315nam a2200121Ia 4500
001 MPKV050894
008 120911s9999 xx 000 0 und d
082 _a630
245 _aAdvances in Agronomy Vol 25
_c;
246 _aAdvances in Agronomy Vol 25
260 _aNew York
_bAcademic Press
_c1973
650 _aAgronomy
999 _c48901
_d48901