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  • × year_i:[1980 TO 1990}
  1. Regazzi, J.J.: Evaluating indexing systems : a review after Cranfield (1980) 8.81 
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  2. Sparck Jones, K.: ¬The Cranfield tests (1981) 8.81 
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  3. Cleverdon, C.W.; Mills, J.: ¬The testing of index language devices (1985) 8.81 
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