North American Industrial Classification System Manual (NAICS) -ask for it at the Mullins Help Desk
Be sure that you get both the NAICS and the SIC codes while you're in the library- not all of the databases use NAICS yet.
Covers: 1971-. This business and trade database indexes and offers full text for U.S. and international academic and trade journals covering business and economic conditions, accounting, finance, corporate strategies, management techniques, as well as competitive and product information.