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  • × author_ss:"Costello, J.C."
  • × year_i:[1960 TO 1970}
  • × language_ss:"e"
  • × type_ss:"a"
  1. Costello, J.C.: ¬A basic theory of roles as syntactical control devices in coordinate indexes (1964) 1.00 
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  2. Costello, J.C.: Uniterm indexing principles, problems and solutions (1961) 1.00 
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