000 00304nam a2200121Ia 4500
008 170101s2007 xx 000 0 und d
082 _a630 SPA
100 _aSparks, D. L.
245 0 _aAdvances In Agronomy
260 _aNew York
_bElsevier Academy Press
_c2007
300 _a292 p.
942 _2ddc
_cB
999 _c1330216
_d1330216