UlrichsWeb (Periodicals Directory)This link opens in a new windowPublication information, online availability, indexing sources, peer-reviewed, reviews .. Ulrich's provides information on active and ceased periodicals. Represent journals in 970 subject caegories. Provides information about a journal publication, price, editor, availability of print and electroinc, indexing sources. Ulrich's provides contact information for 80,000 publishers from 200 countries.
helps in identifying the most frequently cited journals in the science and social science fields,citation data on journals in the areas of science, technology, and social sciences. Each annual database contains the citation data from the JCR year indicated. For every journal covered, the following information is collected or calculated - Citation and article counts, Impact factor, Immediacy index, Cited half-life, Citing half-life, Source data listing, Citing journal listing, Cited journal listing, Subject categories, Publisher information.