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Buck, C.F., P.A. Mayewski, M.J. Spencer, S.I. Whitlow, M.S. Twickler, and D. Barrett. 1992. Determination of major ions in snow and ice cores by ion chromatography. Journal of Chromatography 594:225-228.
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Lyons, W.B., P.A. Mayewski, M.J. Spencer, M.S. Twickler, and T.E. Graedel. 1990. A Northern Hemispheric volcanic chemistry record (1869-1984) and climatic implications using a south Greenland ice core. Annals of Glaciology 14:176-182.
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Mayewski, P.A., G. Holdsworth, M.J. Spencer, S.I. Whitlow, M.S. Twickler, M.C. Morrison, K.K. Ferland, and L.D. Meeker. 1993. Ice core sulfate from three northern hemisphere sites: Source and temperature forcing implications. Atmospheric Environment 27A:2915-2919.
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Mayewski, P.A., M.J. Spencer, M.S. Twickler, and S.I. Whitlow. 1990. A glaciochemical survey of the Summit region, Greenland. Annals of Glaciology 14:186-190.
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Mayewski, P.A., W.B. Lyons, M.J. Spencer, M.S. Twickler, C.F. Buck, and S.I. Whitlow. 1990. An ice core record of atmospheric response to anthropogenic sulphate and nitrate. Nature 346:554-556.
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Taylor, K.C., R.B. Alley, R.J. Fiacco, P.M. Grootes, G.W. Lamorey, P.A. Mayewski, and M.J. Spencer. 1992. Ice core dating and chemistry by direct-current electrical conductivity. Journal of Glaciology 38:325-332.
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Whung, P.-Y., E.S. Saltzman, M.J. Spencer, P.A. Mayewski, and N.S. Gundestrup. 1994. A two hundred year record of biogenic sulfur in a South Greenland ice core (20D). Journal of Geophysical Research 99:1147-1156.