000			00353nam a2200133Ia 4500
008			140208s9999 xx 000 0 und d
020			_a9780120007738
044			_aU.S.A.
100			_aSparks, Donald L., ed.
245			_aAdvances in agronomy. v.73, 2001 _c
260			_bAcademic Press _aSan Diego _c2001
300			_a173 p.; 23cm.
942			_2udc _cSR
999			_c28128 _d28128