Periodicals Index Online is unique in combining a broad subject base with deep chronological coverage going back over 300 years. It covers 37 key subject areas in the humanities and social sciences and offers vast variety within these subject areas. Periodicals Index Online currently indexes over 18 million articles going as far back as 1665 and every article in each journal is indexed, from volume 1 issue 1 to recent times. Cataloging in Periodicals Index Online is not limited by language or by date. Over three centuries of scholarly publication in 40 languages and dialects are indexed, including English, French, German, Italian, Spanish and other Western languages.
Periodicals Index Online is an electronic index to millions of articles published in over 5,500 periodicals in the humanities and social sciences.