000 00290nam a2200121Ia 4500
008 170101s1973 xx 000 0 und d
082 _a630 AME
100 _aAmerican Society of Agronomy
245 0 _aAdvances in Agronomy vol. 25
260 _c1973
300 _a399 p
942 _2ddc
_cB
999 _c475516
_d475516