000 00280nam a2200121Ia 4500
008 161121s9999 xx 000 0 und d
100 _aCARLSON (Peter S)
245 0 _aBiology of Crop productivity
260 _cAcademic Press Inc.
365 _b0
650 _aNIL
942 _cBK
999 _c89009
_d89009