http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
Bimonthly, with annual cumulations, 1979-
Quarterly, with annual cumulations, <1964>-1978
"An international interdisciplinary index to the literature of science."
Volumes for 1964- have: Guide and lists of source publicationss.
Issued also online as one of 3 databases comprising the Web of science citation databases.
Annual cumulations issued in 2 pts.: Source index and Citation index, 1964-1965; in 3 pts.: Source index, Citation index, and Permuterm index, 1966-19 . Issues for <2001-> in numerous volumes comprising 5 pts.: Citation index, Corporate index, Source index, Permuterm subject index, Guide & list of source publications.
Has also guides and journal lists, 1964-
Annual cumulations include: Journal citation index, 1975-1976; SCI journal citation reports, 1978-1988; issued separately on microfiche with title: SCI JCR, 1989-
Five year cumulations issued for 1965/69-<1980/84>
Material for 1961-1964 also cumulated in: SCI, science citation index, 1955-1964, ten year cumulation.