Implementation 
Census Bureau 
BEA 
BLS 
Other agencies 

Product Classification
Service Sector
Manufacturing

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International
Concordances

Development of NAICS 
Introduction
Federal Register  
Issues & concepts 
Papers & speeches 


Implementing NAICS at
U.S. Federal Agencies

Agency Conversion Reference Period
U.S. Census Bureau varies, see list
Bureau of Economic Analysis varies, see list
Bureau of Labor Statistics varies, see list
Internal Revenue Service 1999
Small Business Administration Oct 1, 2000, see statement