Encyclopedia of American Industries. - Information Desk1 HC102.E53 2 vols. - Provides an industry snapshot, the organization and structure, background and development, current conditions, industry leaders, and more. Most 4-digit SIC code industries are covered.
Investext Plus - Provides investment and association reports on companies and industries including various reports on biotechnology and pharmaceutical industries. From CEO interviews to a Morgan Stanley/Dean Witter 113 page report titled Pharmaceutical Industry Review, these reports can provide valuable insight on industries.
Medical and Healthcare Marketplace Guide, Dorland's
Information Desk1 HD9994.U5 M42 V.1 and 2 (Ask a Reference Librarian to log you in to the more current Online version.)
More than 19,500 of the biomedical industry's top companies and executives as well as volume one's amazing research reports. Over 600 articles on various aspects of the worldwide medical and healthcare industry, including market surveys on over 350 different market segments.

- Trade Associations
Major associations of an industry are often excellent sources of data, sometimes free but most often a membership is required.
Pharmaceutical Research and Manufacturers of America (PhRMA)

Directories for Specific Companies and Identifying Competitors
Getting Well - PDR Drug Information
Search FDA-approved drugs from Physicians Desk Reference. Information about drugs provided in for consumers in lay terms. We have the PDR in the reference collection RS250 .P5 2000. It lists all prescription drugs that are approved.
BioSpace
Web site allowing users to find company information as well as clinical development searches, news, IPOs.
FDA - Food and Drug Administration
The Center for Drug Evaluation and Research has useful US regulatory information. They even have a search for approved drugs Also, a useful overview on the drug approval process From Test Tube to Patient.