000 00308nam a2200121Ia 4500
008 140113s9999 xx 000 0 und d
082 _a631(02) K6.18
100 _a"Norman, A.G., Ed."
245 _aAdvances in Agronomy -vol. 18
260 _a1966
_bAcademic Press
_cNew York
300 _a392
942 _cBK
999 _c57736
_d57736