Looking for a classification system, controlled vocabulary, ontology, taxonomy, thesaurus that covers the field you are working in? The University Library of Basel in Switzerland recently launched a register containing the metadata of 600 controlled and structured vocabularies in 65 languages. Its official name: the Basel Register of Thesauri, Ontologies and Classifications (BARTOC).

High quality search

All items in BARTOC are indexed with Eurovoc, EU's multilingual thesaurus, and classified using Dewey Decimal Classification (DDC) numbers down to the third level, allowing a high quality subject search. Other search characteristics are:

• The search interface is available in 20 languages.
• A Boolean operators field is integrated into the search box.
• The advanced search allows you to refine your search by Field type, Language, DDC, Format and Access.
• In the results page you can refine your search further by using the facets on the right side.

Screenshot: Search interface