Reference Universe: 1975-2019 reveals comprehensive scholarly, authoritative introductions using your library's own specialized reference collection.
Data: 35 million citations.
NOTE: Trial requires establishing library holdings profile.
19th Century Masterfile
19th Century Masterfile: 1106-1930 offers primary source analysis in Humanities, Engineering, History of Science, Legal Studies, the Arts, and more.
Data: 27 million citations.
U.S. Documents Masterfile
U.S. Documents Masterfile: 1774-2019 is a resource for American public documents and federally-funded research reports from 1774 to present day.
Data: 15 million citations.