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Snowden, M.J. Freyberg, P.P. Plucinsky, J.H.M.M. Schmitt, J. Truemper, W. Voges, R.J. Edgar, D. McCammon, W.T. Sanders: Astrophysical Journal, Vol.454 (1995), pp.643-653 name: REMARKS (...) type: character*68 no. of elements: 4 Use of this map is permitted for scientific purposes as long as reference is made to the aforementioned publication. 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