# Controlled Vocabularies: Past, Present and Future of Subject Access

> Research article (Cataloging & Classification Quarterly, 2021) · cited 11× · AI/ML

**Wikidata**: [openalex:W3126504794](https://www.wikidata.org/wiki/openalex:W3126504794)  
**Source**: https://4ort.xyz/entity/controlled-vocabularies-past-present-and-future-of-subject-access