000 00269nam a2200121Ia 4500
008 161121s9999 xx 000 0 und d
100 _aSPARKS (Donald L)
245 0 _aAdvances in Agronomy
260 _cAcademic press
365 _b0
650 _aNIL
942 _cBK
999 _c104449
_d104449