Web of Science provides an interface for searching the electronic databases Science Citation Index Expanded™ (SCI) and Social Science Citation Index^® (SSCI). Our NIH license allows searching for records from 1955 to present (SCI) and 1956 to present (SSCI).

Science Citation Index Expanded
The Science Citation Index Expanded is a multidisciplinary database, with searchable author abstracts, covering the journal literature of the sciences. It indexes more than 5,700 major journals across 164 scientific disciplines. Some of the disciplines covered include:

Agriculture	Neuroscience
Astronomy	Oncology
Biochemistry	Pediatrics
Biology	Pharmacology
Biotechnology	Physics
Chemistry	Plant Sciences
Computer Science	Psychiatry
Materials Science	Surgery
Mathematics	Veterinary Science
Medicine	Zoology

Social Sciences Citation Index
The Social Sciences Citation Index is a multidisciplinary database, with searchable author abstracts, covering the journal literature of the social sciences. It indexes more than 1,725 journals spanning 50 disciplines, as well as covering individually selected, relevant items from over 3,300 of the world's leading scientific and technical journals. Some of the disciplines covered include:

• Both databases are updated weekly.
• You can order full text articles found during a Web of Science search.
• You can link to full text articles from online journals to which NIH Library subscribes.
• For more detail search guidelines link to: http://portal.isiknowledge.com/help/h_toc.htm#table_of_contents

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