At present there is no direct access to Hoover's information for the BGSU campus community. But several Hoover's publications are in the Lexis Nexis Academic database.
To get expanded company reports from Hoover's (Basic Report and In-Depth Report) listing industry competitors and more, use the main search box Enter company name and in the Source box press Find.
Enter Hoover's and choose the Hoover's reports that you want.
In the Hoover's Basic Record, you can scroll down to see a list of competitiors, among other useful information.
Use the Get Company Information search box on the right side of the screen to find company reports from the business press including a snapshot with contact information and a brief dsecription. The company snapshot will include a NAICS code for the company from a reputable source, although it may not be Hoover's
This database is a great starting place, since you often find private companies and subsidiaries here as well as those traded on the stock markets.
The Census Bureau website at http://www.census.gov/eos/www/naics/ is searchable by code number or keyword as shown in the screenshot below with results for waste.
The North American Industry Classification System book which lists codes for industries is located on shelves at the Research/Information Desk at REF HF 1042.N6 2002a.
Most investment databases include some industry information. Financial comparions of leading competitors are most common.
Try clicking on the Industry tab as shown below and entering a key word to see what companies Lexis Nexis Acadaemic includes in that industry.