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  • × author_ss:"Keen, E.M."
  1. Keen, E.M.: Some aspects of proximity searching in text retrieval systems (1992) 5.50 
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  2. Keen, E.M.: Laboratory tests of manual systems (1981) 5.50 
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  3. Keen, E.M.; Hartley, R.J.: Phrase processing in text retrieval (1994) 5.50 
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  4. Keen, E.M.: Aspects of computer-based indexing languages (1991) 5.50 
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