000 00299nam a2200121Ia 4500
008 191031s9999 xx 000 0 und d
100 _aWilbert walter
245 0 _aSoil science: Its principles and practice
260 _bJ.B Lippincolt company
260 _c1949
365 _bFree
942 _cBK
999 _c198363
_d198363