000			00374nam a2200133Ia 4500
008			140208s9999 xx 000 0 und d
020			_a00021962
044			_aU.S.A.
100			_aArnon, D.I., ed.
245			_aAgronomy Journal. v.48, 1956 _cedited by D.I.Arnon
260			_bAmerican Society of Agronomy _aWisconsin _c1956
300			_av.48, 624 p.; 28cm.
942			_2udc _cP
999			_c7335 _d7335