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   PR #    40
   PKS 0548-322 is one of the 5 brightest x-ray Bl Lac objects. It varies
   by a factor of 2. There is evidence from the Einstein SSS spectra of
   aabsorption feature at ~0.6 kev which is attributed to oxygen. The
   main goal of the observation is to confirm this spectral feature and
   to search for other spectral features , particularly those due to Fe.
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