Web of Science - Science Citation Index Expanded - 1991
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Web of Science is a citation database (enriched metadata and abstracts). collection include Science Citation Index Expanded, Social Sciences Citation Index, and are Arts & Humanities Citation Index.  Coverage begins in 1989. For more information: http://thomsonreuters.com/content/science/pdf/Web_of_Science_factsheet.pdf
Web of Science is a citation database (enriched metadata and abstracts). collection include Science Citation Index Expanded, Social Sciences Citation Index, and are Arts & Humanities Citation Index.  Coverage begins in 1989. For more information: http://thomsonreuters.com/content/science/pdf/Web_of_Science_factsheet.pdf