https://vocabularyserver.com/unesco/en/https://vocabularyserver.com/unesco/en/xml.php?skosTema=4311Indexing languages https://vocabularyserver.com/unesco/en/xml.php?skosTema=4311 Information sciences BT https://vocabularyserver.com/unesco/en/xml.php?skosTema=4311 Terminology RT https://vocabularyserver.com/unesco/en/xml.php?skosTema=4311 Linguistics RT https://vocabularyserver.com/unesco/en/xml.php?skosTema=4311 Information retrieval RT https://vocabularyserver.com/unesco/en/xml.php?skosTema=4311 Authority lists NT https://vocabularyserver.com/unesco/en/xml.php?skosTema=4311 Thesauri NT https://vocabularyserver.com/unesco/en/xml.php?skosTema=4311 Terminological control NT https://vocabularyserver.com/unesco/en/xml.php?skosTema=4311 Controlled languages NT https://vocabularyserver.com/unesco/en/xml.php?skosTema=4311 Documentary languages UF https://vocabularyserver.com/unesco/en/xml.php?skosTema=4311 Retrieval languages UF