000 00322nam a2200121Ia 4500
008 170101s1993 xx 000 0 und d
082 _a630 AME
100 _aAmerican Society of Agronomy
245 0 _aAdvances in Agronomy vol. 51
260 _bAcdemic Press- Inc. Son-Digo
_c1993
300 _a217 p
942 _2ddc
_cB
999 _c1116916
_d1116916