000 00312nam a2200121Ia 4500
008 170101s2004 xx 000 0 und d
082 _a630 SPA
100 _aSparks D. L.
245 0 _aAdvances in Agronomy Vol-84
260 _aAmsterdam
_bElsevier Academic Press
_c2004
300 _a318 p.
942 _2ddc
_cB
999 _c1257816
_d1257816