000 00287nam a2200121Ia 4500
008 170101s2012 xx 000 0 und d
082 _a630 SPA
100 _aSparks D.L.
245 0 _aAdvances in Agronomy
260 _aAmsterdam
_bElsevier
_c2012
300 _a376p
942 _2ddc
_cB
999 _c1537916
_d1537916