# sonar

> Acoustic sensing method

**Wikidata**: [Q133220](https://www.wikidata.org/wiki/Q133220)  
**Wikipedia**: [English](https://en.wikipedia.org/wiki/Sonar)  
**Source**: https://4ort.xyz/entity/sonar


## References

1. [Nuovo soggettario](https://thes.bncf.firenze.sbn.it/termine.php?id=40570)
2. Nuovo soggettario
3. Freebase Data Dumps. 2013
4. [Registros de autoridad de "Materia" de la Biblioteca Nacional de España. Spain open data portal](https://www.bne.es/media/datosgob/catalogo-autoridades/materia/materia-UTF8.zip)
5. Integrated Authority File
6. YSO-Wikidata mapping project
7. [Source](https://golden.com/wiki/Sonar-63RMX)
8. National Library of Israel
9. KBpedia
10. [OpenAlex](https://docs.openalex.org/download-snapshot/snapshot-data-format)