000			00334nam a2200133Ia 4500
008			130225s9999 xx 000 0 und d
100			_aDavidson, J.B., King, M.L.
245			_aModern silo construction
260			_aIowa _c1909
300			_a94-157 p.
440			_aIowa Agricultre Experiment St
901			_a21634
942			_cB _2udc
999			_c3513 _d3513