000 00306nam a2200121Ia 4500
008 170101s1978 xx 000 0 und d
082 _a630 AME
100 _aAmerican Society of Agronomy
245 0 _aAdvances in Agronomy vol. 30
260 _bAcademic Press
_c1978
300 _a293 p
942 _2ddc
_cB
999 _c638816
_d638816