000			00331nam a2200133Ia 4500
008			130223s9999 xx 000 0 und d
245			_aSoil - conserving the soil - improving the soil
260			_aRome
260			_c1970
300			_a30 p.
440			_aNo. 10; Food and Agriculture O
901			_pS19462
942			_cB _2udc
999			_c133568 _d133568