UlrichsWeb Global Serials Directory is the authoritative source of bibliographic and publisher information on more than 300,000 periodicals of all types - academic and scholarly journals, open access publications, peer-reviewed titles, popular magazines, newspapers, newsletters, and more from around the world, existing or defunct. Using several systems of subject classification, this directory collects information on the title, periodicity, publisher, ISSN and price, whether the journal is peer-reviewed, has an electronic version, in which country and which language is issued, and also provides link to the publisher homepage.