Citations reflect the contents of over1,000 journals, with all subject headings searchable in English. Over 112,000 records as of July 1997. Isis Current Bibliography of the History of Science. 1975 to the present. Updates annually, with approximately 4,500 records added at each update.
Most citations are in English.
Other major languages include French, German, Italian, and Spanish. Abstracts and table of contents information included in some records. Current Bibliography in the History of Technology. 1987 to the present. Updates annually, with approximately 3,000 records added at each update.