000			00425 a2200133 4500
008			190220b xxu||||| |||| 00| 0
245			_aTrace elements (Proceedings of the conference held at the Ohio Agril. Experiment station, Ohio, 14-16, 1957) /
260			_aNewYork _bAcademic Press Inc.
300			_a410p.
700			_aLamb, C. A. (Ed.)
700			_aO. G. Bentley (Ed.)
700			_aBeattie, J. M. (Ed.)
942			_2ddc _cBK
999			_c8688 _d8688