000			00353nam a2200133Ia 4500
008			140208s9999 xx 000 0 und d
020			_a9780120007684
044			_aU.S.A.
100			_aSparks, Donald L., ed.
245			_aAdvances in agronomy. v.68, 2000 _c
260			_bAcademic Press _aSan Diego _c2000
300			_a331 p.; 23cm.
942			_2udc _cSR
999			_c28061 _d28061