000			00351nam a2200145Ia 4500
008			130223s9999 xx 000 0 und d
100			_aOschwald, W.R. and Others
245			_aPrincipal soils of Iowa
260			_aAmes
260			_c1965
300			_a1-74 p.
440			_aIowa Agricultural Experiment S
901			_pS13503
942			_cB _2udc
999			_c130496 _d130496