000			00316nam a22001337a 4500
003			OSt
008			240312b |||||||| |||| 00| 0 eng d
082			_a016.631 _bR16I
100			_aI R R I
245			_aInternational bibliography on cropping system
260			_aI R R I _c1979
300			_a239
942			_2ddc _cRFB
999			_c37988 _d37988