# hydroponics

> agricultural technics for growing plants without soil using nutrients in water

**Wikidata**: [Q191667](https://www.wikidata.org/wiki/Q191667)  
**Wikipedia**: [English](https://en.wikipedia.org/wiki/Hydroponics)  
**Source**: https://4ort.xyz/entity/hydroponics


## References

1. [Nuovo soggettario](https://thes.bncf.firenze.sbn.it/termine.php?id=22475)
2. Iowa State University Library Vocabularies
3. Nuovo soggettario
4. Freebase Data Dumps. 2013
5. [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)
6. Integrated Authority File
7. [Source](https://www.oddballfilms.com/node/13661)
8. BBC Things
9. YSO-Wikidata mapping project
10. UMLS 2023
11. Quora
12. National Library of Israel
13. KBpedia
14. GF WordNet
15. [OpenAlex](https://docs.openalex.org/download-snapshot/snapshot-data-format)