000 00339nam a2200121Ia 4500
001 MPKV060663
008 120911s9999 xx 000 0 und d
082 _a631.4
245 _aSoil Science Vol.79 No.1-6
_c;
246 _aSoil Science Vol.79 No.1-6
260 _aMaryland
_bWilliams and Wilkins Co. Baltimore
_c1955
650 _aSoil science
999 _c58649
_d58649