MEDLINE is produced by the National Library of Medicine and is the largest biomedical literature database. Includes over 18 million citations to articles related to all aspects of health and medicine and is international in scope.
Coverage Dates: 1950 - present

Free access to article indexing and abstracts in biomedical fields including clinical and experimental medicine; dentistry; health care administration; microbiology; nursing; paramedical professions; pathology; public health; pharmacology; physiology; reproductive biology; psychiatry; psychology; toxicology; and veterinary medicine. PubMed includes free access to MEDLINE and is direct from the National Library of Medicine.
Abstracts and index: 1946 - present

Health Source: Nursing/Academic Edition provides article citations for nearly 850 journals and access to nearly 550 full text journals. Coverage of nursing and allied health is particularly strong. Concurrent Users: unlimited
Coverage Dates: 1975 - present

The Web of Science accesses a multidisciplinary database of bibliographic information gathered from thousands of scholarly journals. The databases are indexed so you can search for specific articles by subject, author, journal, and/or author address. Because the information stored about each article includes the article's cited reference list (often called its bibliography), you can also search the databases for articles that cite a known author or work.
Science Citation Index 1965-present
Social Science Citation Index 1965-present