000			00338nam a2200145Ia 4500
008			140205s9999 xx 000 0 und d
082			_a630/SPA
100			_aSparks, Donal, L.
245			_aAdvances in Agronomy Vol 91
260			_bElsevier _a _c2006
300			_a483
650			_aAgriculture
650			_aAgronomy
942			_2ddc _cBK
999			_c3740 _d3740