000			00459nam a2200157Ia 4500
008			130223s9999 xx 000 0 und d
100			_aOlofsson, Stina
245			_aInfluence of preceding crop and crop residue on stand and yield of winter wheat
260			_aUppasala
260			_bSwedish University of Agricultural Sciences
260			_c1993
300			_a211 p.
440			_aNo. 18; Swedish University of
901			_pS42581
942			_cB _2udc
999			_c125479 _d125479