000			00375nam a2200145Ia 4500
008			130225s9999 xx 000 0 und d
020			_a9058080773
080			_a631.51.021 _bZ18S
100			_aZapata, Martin Cadena, ed
245			_aSoil workability as basis for advice on tillage activities
260			_c1999
300			_a144 p.
901			_a219900
942			_cB _2udc
999			_c12577 _d12577