000 00272nam a2200121Ia 4500
008 161121s9999 xx 000 0 und d
100 _aRobert hall
245 0 _aPrinciples and lpractice ofmanaging soil
260 _cNIL
365 _b0
650 _aNIL
942 _cBK
999 _c105280
_d105280