000 00290nam a2200121Ia 4500
008 170101s1979 xx 000 0 und d
082 _a630 AME
100 _aAmerican Society of Agronomy
245 0 _aAdvances in Agronomy vol. 31
260 _c1979
300 _a315 p
942 _2ddc
_cB
999 _c702266
_d702266