000 00385nam a2200133Ia 4500
001 MPKV057774
008 120911s9999 xx 000 0 und d
082 _a631.4
245 _aSoil Science Vol.117 No.1-6
_c;
246 _aSoil Science Vol.117 No.1-6
246 _aSoil Science Vol.118 No.1-6
260 _aMaryland
_bWilliams and Wilkins Co. Baltimore
_c1974
650 _aSoil Science
999 _c55764
_d55764