You will find business related materials in these sections of the Circulating Collection (upper level), Reference (main level), and Media Services (lower level):
658.4 - Business and Management information including business plans information
330-339 - Industrial information - particularly 332's
310-319 - Statistical information including demographics
ABI/Inform Complete indexes nearly 5,000 business journals, including nearly 3,900 full-text titles covering business and economic condition, coporate strategies, management techniques, as well as competitive and product information.
First Research Industry Studies covers 900 industries, providing industry overviews, recent developments, business challenges, trends and opportunities, financial information and industry forecasts and ratings. See a sample industry profile. The database also offers state profiles with economic data, employment and real estate trends.