"Beginning with the 1999 survey year, data will be published on a North American Industry Classification System (NAICS)--basis for 1999 and 1998. The 1998 survey year was the final year the U.S. Census Bureau published data for its annual service surveys using the Standard Industrial Classification (SIC) system. These SIC based dataare not comparable to NAICS."
Plný text je přístupný pouze z počítačů Ostravské univerzity
Mode of access: Internet from the Census Bureau’s web site. Address as of 06/15/06: http://www.census.gov/svsd/www/services/sas/sas%5Fdata/sashist.htm; current access is available via PURL.
Description based on: 1994; title from title screen (viewed 6/15/06).