000 003030000a22001450004500
060 _a100
082 _a630.685 ADV.12
100 _aNorman, A G
245 _aAdvances in agronomy V.12
260 _aNewyork, Academic press
260 _c1960
300 _a464
650 _aAgronomy
942 _cBK
999 _c347902
_d347902