Search biomedical literature citations from MEDLINE, life science journals, and online books. [1950 - present]
Access to citations from MEDLINE, PreMEDLINE, other journals in the field of medicine and life sciences, and links to NCBI's integrated molecular biology databases including nucleotide sequences, protein sequences, 3-D protein structure data, population study data sets, and assemblies of complete genomes in an integrated system.
Indexes leading journals in the arts, humanities, sciences and social sciences. Allows cited reference searching. (ISI Web of Knowledge) [1900 - present]
Provides links to footnoted citations as well as sources that have subsequently cited an article. Includes the Arts & Humanities Citation Index (from 1975), Science Citation Index (from 1900), and Social Sciences Citation Index (from 1900).
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