HELECON services are Learning Centre's own content production and a special service for our customers. HELECON is a registered trademark. The service has a long tradition since 1975.
Helecon-databases production ceased at the end 2016 and Helecon vocabulary is not updated after 2018. Most of the databases remains in use but no new contents will be produced. Databases moved to a new platform in January 2017. Databases are available for open access unless stated otherwise.