IBZ: International Bibliography of periodical literature on the humanities and social sciences

IBZ, also known as "The Dietrich", has been published since 1896 and is an international and interdisciplinary bibliography of academic periodical literature mainly from the Humanities, Social Sciences and Arts. IBZ online contains over 2,553,260 journal articles from about 10,785 journals covering the years 1983ff. Approximately 120,000 entries are added to the database annually containing a subject classification.