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  • What are NAICS and SIC codes?   
  • NAICS (North American Industry Classification Standard) and SIC (Standard Industry Classification) are used to classify businesses by industry.  This classification allows for data to be collected by standardized industry codes. 
  • Which databases at the MHL can I search using a NAICS or a SIC code?
  • IBISWorld
  • Search with NAICS codes or by keyword
  • ProQuest
  • Search with NAICS: Enter NAICS code in search box following this example: NAICS(21111)