Essential database for biomedicine. Includes citations from MEDLINE and for biomedical articles in life science journals. A product of the National Center for Biotechnology Information. PubMed Help || Tutorial || PubMed for Handhelds
A multidisciplinary database covering peer-reviewed literature in science, engineering, medicine, and social sciences (including some arts & humanities). Coverage is strongest from 1996 to present. Complements Web of Science.