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 Duplicates and Facets 




 
Duplicates and Facets
 
 
    

  • Almost 2300 sites are listed in 5 lists:  ChemInfo, ChemDex, Yahoo, Netfirst and INFOMINE.

    

      

    • 12 were common to 5 sites

    • over 20 more were common to 4 sites

    • every list had some unique sites

    • up to 1/4 of the sites listed were duplicated in the same directory or subsets


 




  
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