000 00306nam a2200121Ia 4500
008 140113s9999 xx 000 0 und d
082 _a631.8 J7
100 _a"Hopkins, Donald P."
245 _aChemicals Humus and the soils
260 _a1957
_bFaber & Faber Ltd.
_cLondon
300 _a288
942 _cBK
999 _c57189
_d57189