The Gnomon Bibliographic Database (GBD) is one of the most extensive database systems in Classical Studies (Ancient History, Epigraphy, Numismatics, Papyrology, Classical Philology, Classical Archaeology and Archaeology of the Roman Provinces, Ancient Near Eastern Studies, Pre- and Early History, Hebrew Bible and New Testament, Early Church History and Patristics, Jewish Studies) including publications on the history of scholarship. The GBD was founded in 1991 by Prof. Dr. Jürgen Malitz (Eichstätt) and includes monographs, anthologies, articles in journals, reviews and encyclopaedias in all relevant academic languages searchable in detail with a comprehensive multilingual thesaurus (currently ca. 25.000 keywords).