000 00297nam a2200121Ia 4500
008 140113s9999 xx 000 0 und d
082 _a581.13 J9
100 _a"Webster,G.C."
245 _aNitrogen metabolism in plants
260 _a1959
_bHarper & Row
_cNew York
300 _a152
942 _cBK
999 _c57242
_d57242