000			00324nam a2200133Ia 4500
008			130225s9999 xx 000 0 und d
100			_aSears, O.H.
245			_aNitrogen factory on every farm
260			_aIllinois _c1928
300			_a1-12 p.
440			_aIllinois Agricultural Experim
901			_a3041
942			_cB _2udc
999			_c617 _d617