000			003030000a22001330004500
060			_a100
082			_a631.410 ADV.11
100			_aLal, R
100			_aStewart, B.A
245			_aSoil Degradation V.11
260			_aNew York,London, Springer - verlag Berlin Heidelberg
260			_c
942			_cBK
999			_c223071 _d223071