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Business Research Guide

Databases and free sources for business research

Free Content

Data.gov
Open data from the United States government
BusinessUSA from the Small Business Administration
EDGAR corporate filings
Public filings with the SEC (Securities and Exchange Comissions) for public companies
NAICS and SICS
North American Industry and Classification System, and Standard Industrial Classification - codes assigned to business types by the US government
DUNS number
Dun and Bradstreet corporate identification number